Questions
8/50 AllUnanswered QUESTION 1 · 1 POINT A fitness center claims that the mean amount of...

8/50

AllUnanswered

QUESTION 1

·

1 POINT

A fitness center claims that the mean amount of time that a person spends at the gym per visit is 33 minutes. Identify the null hypothesis, H0, and the alternative hypothesis, Ha, in terms of the parameter μ.

Select the correct answer below:

H0: μ≠33; Ha: μ=33

H0: μ=33; Ha: μ≠33

H0: μ≥33; Ha: μ<33

H0: μ≤33; Ha: μ>33

FEEDBACK

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QUESTION 2

·

1 POINT

The answer choices below represent different hypothesis tests. Which of the choices are right-tailed tests? Select all correct answers.

Select all that apply:

  • H0:X≥17.1, Ha:X<17.1

  • H0:X=14.4, Ha:X≠14.4

  • H0:X≤3.8, Ha:X>3.8

  • H0:X≤7.4, Ha:X>7.4

  • H0:X=3.3, Ha:X≠3.3

FEEDBACK

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QUESTION 3

·

1 POINT

Find the Type II error given that the null hypothesis, H0, is: a building inspector claims that no more than 15% of structures in the county were built without permits.

Select the correct answer below:

The building inspector thinks that no more than 15% of the structures in the county were built without permits when, in fact, no more than 15% of the structures really were built without permits.

The building inspector thinks that more than 15% of the structures in the county were built without permits when, in fact, more than 15% of the structures really were built without permits.

The building inspector thinks that more than 15% of the structures in the county were built without permits when, in fact, at most 15% of the structures were built without permits.

The building inspector thinks that no more than 15% of the structures in the county were built without permits when, in fact, more than 15% of the structures were built without permits.

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QUESTION 4

·

1 POINT

Suppose a chef claims that her meatball weight is less than 4 ounces, on average. Several of her customers do not believe her, so the chef decides to do a hypothesis test, at a 10% significance level, to persuade them. She cooks 14 meatballs. The mean weight of the sample meatballs is 3.7 ounces. The chef knows from experience that the standard deviation for her meatball weight is 0.5 ounces.

  • H0: μ≥4; Ha: μ<4
  • α=0.1 (significance level)

What is the test statistic (z-score) of this one-mean hypothesis test, rounded to two decimal places?

Provide your answer below:

$$Test statistic =−2.24

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QUESTION 5

·

1 POINT

What is the p-value of a right-tailed one-mean hypothesis test, with a test statistic of z0=1.74? (Do not round your answer; compute your answer using a value from the table below.)

z1.51.61.71.81.90.000.9330.9450.9550.9640.9710.010.9340.9460.9560.9650.9720.020.9360.9470.9570.9660.9730.030.9370.9480.9580.9660.9730.040.9380.9490.9590.9670.9740.050.9390.9510.9600.9680.9740.060.9410.9520.9610.9690.9750.070.9420.9530.9620.9690.9760.080.9430.9540.9620.9700.9760.090.9440.9540.9630.9710.977

Provide your answer below:

0.0410

FEEDBACK

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QUESTION 6

·

1 POINT

Kenneth, a competitor in cup stacking, claims that his average stacking time is 8.2 seconds. During a practice session, Kenneth has a sample stacking time mean of 7.8 seconds based on 11 trials. At the 4% significance level, does the data provide sufficient evidence to conclude that Kenneth's mean stacking time is less than 8.2 seconds? Accept or reject the hypothesis given the sample data below.

  • H0:μ=8.2 seconds; Ha:μ<8.2 seconds
  • α=0.04 (significance level)
  • z0=−1.75
  • p=0.0401

Select the correct answer below:

Do not reject the null hypothesis because the p-value 0.0401 is greater than the significance level α=0.04.

Reject the null hypothesis because the p-value 0.0401 is greater than the significance level α=0.04.

Reject the null hypothesis because the value of z is negative.

Reject the null hypothesis because |−1.75|>0.04.

Do not reject the null hypothesis because |−1.75|>0.04.

FEEDBACK

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QUESTION 7

·

1 POINT

A recent study suggested that 81% of senior citizens take at least one prescription medication. Amelia is a nurse at a large hospital who would like to know whether the percentage is the same for senior citizen patients who go to her hospital. She randomly selects 59 senior citizens patients who were treated at the hospital and finds that 49 of them take at least one prescription medication. What are the null and alternative hypotheses for this hypothesis test?

Select the correct answer below:

{H0:p=0.81Ha:p>0.81

{H0:p≠0.81Ha:p=0.81

{H0:p=0.81Ha:p<0.81

{H0:p=0.81Ha:p≠0.81

FEEDBACK

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QUESTION 8

·

1 POINT

A researcher claims that the proportion of cars with manual transmission is less than 10%. To test this claim, a survey checked 1000 randomly selected cars. Of those cars, 95 had a manual transmission.

The following is the setup for the hypothesis test:

{H0:p=0.10Ha:p<0.10

Find the test statistic for this hypothesis test for a proportion. Round your answer to 2 decimal places.

Provide your answer below:

$$Test_Statistic=−0.53

FEEDBACK

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QUESTION 9

·

1 POINT

A medical researcher claims that the proportion of people taking a certain medication that develop serious side effects is 12%. To test this claim, a random sample of 900 people taking the medication is taken and it is determined that 93 people have experienced serious side effects. .

The following is the setup for this hypothesis test:

H0:p = 0.12

Ha:p ≠ 0.12

Find the p-value for this hypothesis test for a proportion and round your answer to 3 decimal places.

The following table can be utilized which provides areas under the Standard Normal Curve:

In: Statistics and Probability

Please answer all the questions Spider-Man and Spider-Woman are planning to have children in the near...

Please answer all the questions

Spider-Man and Spider-Woman are planning to have children in the near future. Spider-Man is able to spin webs (S) and cling to walls (C), whereas Spider-Woman can spin webs but cannot cling to walls. If both of these traits are inherited in a dominant manner (i.e., the dominant trait will always mask the recessive trait), Spider-Man is heterozygous for each trait, and Spider-Woman is heterozygous for the web-spinning trait...

What is Spider-Man's genotype?

a.

SSCc

b.

SsCc

c.

SSCC

d.

ssCC

e.

Sscc

Spider-Man and Spider-Woman are planning to have children in the near future. Spider-Man is able to spin webs (S) and cling to walls (C), whereas Spider-Woman can spin webs but cannot cling to walls. If both of these traits are inherited in a dominant manner (i.e., the dominant trait will always mask the recessive trait), Spider-Man is heterozygous for each trait, and Spider-Woman is heterozygous for the web-spinning trait...

What is Spider-Woman's genotype?

a.

SSCc

b.

SsCc

c.

SSCC

d.

ssCC

e.

Sscc

Spider-Man and Spider-Woman are planning to have children in the near future. Spider-Man is able to spin webs (S) and cling to walls (C), whereas Spider-Woman can spin webs but cannot cling to walls. If both of these traits are inherited in a dominant manner (i.e., the dominant trait will always mask the recessive trait), Spider-Man is heterozygous for each trait, and Spider-Woman is heterozygous for the web-spinning trait...

What gametes does Spider-Man produce?

a.

SS and Cc

b.

SC and Sc

c.

Ss, sS, Cc, and cC

d.

SC, Sc, sC, and sc

e.

Sc and sc

Spider-Man and Spider-Woman are planning to have children in the near future. Spider-Man is able to spin webs (S) and cling to walls (C), whereas Spider-Woman can spin webs but cannot cling to walls. If both of these traits are inherited in a dominant manner (i.e., the dominant trait will always mask the recessive trait), Spider-Man is heterozygous for each trait, and Spider-Woman is heterozygous for the web-spinning trait...

What gametes does Spider-Woman produce?

a.

SC and Sc

b.

SC, Sc, sC, and sc

c.

SC

d.

Sc and sc

e.

None of the above

Spider-Man and Spider-Woman are planning to have children in the near future. Spider-Man is able to spin webs (S) and cling to walls (C), whereas Spider-Woman can spin webs but cannot cling to walls. If both of these traits are inherited in a dominant manner (i.e., the dominant trait will always mask the recessive trait), Spider-Man is heterozygous for each trait, and Spider-Woman is heterozygous for the web-spinning trait...

What percentage of their offspring will not be able to spin webs but will be able to cling to walls?

a.

0%

b.

12.5%

c.

25%

d.

37.5%

e.

75%

Spider-Man and Spider-Woman are planning to have children in the near future. Spider-Man is able to spin webs (S) and cling to walls (C), whereas Spider-Woman can spin webs but cannot cling to walls. If both of these traits are inherited in a dominant manner (i.e., the dominant trait will always mask the recessive trait), Spider-Man is heterozygous for each trait, and Spider-Woman is heterozygous for the web-spinning trait...

What percentage of their offspring will be heterozygous for both traits?

a.

0%

b.

12.5%

c.

25%

d.

37.5%

e.

50%

In: Biology

You operate your own small building company and have decided to bid on a government contract...

You operate your own small building company and have decided to bid on a government contract to build a pedestrian walkway in a national park during the coming winter. The walkway is to be of standard government design and should involve no unexpected costs. Your present capacity utilization rate is moderate and allows sufficient scope to understand this contract, if you win it. You calculate your incremental costs to be $268,000 and your fully allocated costs to be $440,000. Your usual practice is to add between 60% and 80% to your incremental costs, depending on capacity utilization rate and other factors. You expect three other firms to also bid on this contract, and you have assembled the following competitor intelligence about those companies.

Issue

Rival A

Rival B

Rival C

Capacity Utilization

At full capacity

Moderate

Very low

Goodwill Considerations

Very concerned

Moderately concerned

Not concerned

Production Facilities

Small and inefficient plant

Medium sized and efficient plant

Large and very efficient plant

Previous Bidding Pattern

Incremental cost plus 35-50%

Full cost plus 8-12%

Full cost plus 10-15%

Cost Structure

Incremental costs exceed yours by about 10%

Similar cost structure to yours

Incremental costs 20% lower but full costs are similar to yours

Aesthetic Factors

Does not like winter jobs or dirty jobs

Does not like messy or inconvenient jobs

Likes projects where it can show its creativity

Political Factors

Decision maker is a relative of the buyer

Decision maker is seeking a new job

Decision maker is looking for a promotion  

Show all of your calculations and processes. Describe your answers in three- to five-complete sentences.

C.) Defend your answers with discussion, making any assumptions you feel are reasonable and/or are supported by the information provided.

In: Economics

towson company manufactures book cases and each requires 38board feet of lumber.Towson expects that 2000 and1750...

towson company manufactures book cases and each requires 38board feet of lumber.Towson expects that 2000 and1750 book cases will be built in june and july respectively .towson keeps lumber on hand at 35%of the next month's production needs.

use this information to determine number board feet of lumber that towson company shoukd buy in june.round and enter final answers to the nearest whole number.

In: Accounting

how do i use a sinewave with 5V peak to peak at 10kHz from a function...

how do i use a sinewave with 5V peak to peak at 10kHz from a function generator to observe it's spectrum on the analyzer. do I have to build a circuit to make a sinewave or can i just use the oscilloscope and function generator without a circuit being built? if so which kind of circuit can I build to make a sinewave with 5V peak to peak.

In: Electrical Engineering

Write a Java program to implement a Single Linked List that will take inputs from a...

Write a Java program to implement a Single Linked List that will take inputs from a user as Student Names.

First, add Brian and Larry to the newly created linked list and print the output

Add "Kathy" to index 1 of the linked list and print output

Now add "Chris" to the start of the list and "Briana" to the end of the list using built-in Java functions.

Print the output of the linked list.

In: Computer Science

Find a dataset online, and get a feel for it by performing some EDA. Produce a...

Find a dataset online, and get a feel for it by performing some EDA. Produce a single plot which you think captures an interesting aspect of the data, and comment on it. (If you wish to use R, there are many data sets already built in, e.g. to the package ‘MASS’; if you are not using R, datasets are readily available -a simple Google search of ’sample datasets’ yields numerous results, for example.)

In: Statistics and Probability

First derive the truth table for the requested modulus sequence, draw the circuit, then implement it...

First derive the truth table for the requested modulus sequence, draw the circuit, then implement it using only the built-in AND, OR, and NOT gates.

Exercise 18 [3.0]

LOCK

Consider a boolean function with inputs: d, e, f, g. The value of the inputs can be defined as V = 8*d + 4*e + 2*f + 1*g. The output of this function is true if V mod 3 is 1.

In: Computer Science

William Prout (1815) proposed that all other atoms are built up of hydrogen atoms, suggesting that all elements

William Prout (1815) proposed that all other atoms are built up of hydrogen atoms, suggesting that all elements should have integral atomic masses based on an atomic mass of one for hydrogen. This hypothesis appeared discredited by the discovery of atomic masses, such as 24.3 u for magnesium and 35.5 u for chlorine. In terms of modern knowledge, explain why Prout’s hypothesis is actually quite reasonable.

In: Chemistry

When designing a new warehouse, its size is the most critical attribute. This is because once...

When designing a new warehouse, its size is the most critical attribute. This is because once built, the outer walls of the warehouse form the boundaries within which all operations must take place.

Explain four (4) important factors in a essay form with proper explanations and examples, that a warehouse manager has to take into consideration that will influence the eventual size of a new warehouse. (warehouse managment).

In: Operations Management