Questions
A 76.0 W, 110-V bulb is connected in parallel with a 45.0 W, 110-V bulb. What...

A 76.0 W, 110-V bulb is connected in parallel with a 45.0 W, 110-V bulb. What is the net resistance?

In: Physics

For each the following questions, • Define the appropriate parameter(s) • State Ho and Ha •...

For each the following questions,
• Define the appropriate parameter(s)
• State Ho and Ha
• Choose the correct model from the following list:
I. Test for a single mean II. Test for a single proportion III. Test for two means, independent samples IV. Test for mean difference, dependent sampling V. Test for two proportions, independent samples
a. You want to support the claim that male bass singers are taller than male tenor singers.

Parameter(s):

Hypotheses: Ho: __________________ Ha: __________________ Model to use: ______

b. You want to reject the claim that no more than 10% of students will suffer financial hardship if tuition increased.

Parameter(s):

Hypotheses: Ho: __________________ Ha: __________________ Model to use: ______

c. You want to support the claim that people spend, on average, more time on the Internet than they do watching television. 200 people will be asked how much time they spent on the TV and on the Internet.

Parameter(s):

Hypotheses: Ho: __________________ Ha: __________________ Model to use: ______

d. You want to test the claim that the average age for a community college student is over 27. You want to support this claim and sample 20 students.

Parameter(s):

Hypotheses: Ho: __________________ Ha: __________________ Model to use: ______

e. Is there a difference in mean overall quality of tomatoes bought at farmers markets versus at grocery stores? Tomatoes are purchased at 30 randomly selected farmers markets and 40 randomly selected highend grocers. Their mean overall quality is compared.

Parameter(s):

Hypotheses: Ho: __________________ Ha: __________________ Model to use: ______

f. A hospital surgery review board wants to determine if the proportion of patients undergoing a particular surgery who are cured is greater than the proportion that are cured by the current non-surgical standard treatment.

Parameter(s):

Hypotheses: Ho: __________________ Ha: __________________ Model to use: ______

g. A higher education centered non-profit organization wants to determine if the percentage of entering freshmen that graduate is lower at a public university than at a private college. Parameter(s):

Hypotheses: Ho: __________________ Ha __________________ Model to use: ______

h. Does the home team have an advantage in NBA basketball games? In a study of 25 games, the visiting team’s points were compared to the home team’s points.

Parameter(s):

Hypotheses: Ho: __________________ Ha: __________________ Model to use: ______

i. A hypothesis test is performed to determine if recent female college graduates are subject to pay discrimination, earning less on average for similar work than recent male college graduates with similar qualifications.

Parameter(s):

Hypotheses: Ho: __________________ Ha: __________________ Model to use: ______

In: Statistics and Probability

A random sample of 200 students has been randomly collected to understand the distribution of a...

A random sample of 200 students has been randomly collected to understand the distribution of a schools favourite fruit in Europe. How do I identity the measures of statistical distribution? The fruit given is Banana - 50 students; Orange - 50 students; Apple - 40 students; and Other - 60 students; to make the sample size of 200 students.

In: Statistics and Probability

Miles Freq 0-4 3 5-9 14 10-14 13 15-19 4 Write two sentences for non-statisticians expressing...

Miles  Freq
 0-4     3
 5-9    14
10-14   13
15-19    4

Write two sentences for non-statisticians expressing Chebyshev’s Theorem. Select the most appropriate sentence corresponding to two standard deviations.



*About 68% of students drive between 5.5212 miles and 13.7730 miles to somewhere
*At least 88.9% of students drive between -2.7306 miles and 22.0248 miles to 
*About 99.7% of students drive between 1.3953 miles and 17.8989 miles to 
*About 68% of students drive less than 22.0248 miles to
*About 95% of students drive between 5.5212 miles and 13.7730 miles to
*About 99.7% of students drive between -2.7306 miles and 22.0248 miles to
*About 68% of students drive between 1.3953 miles and 17.8989 miles to
*About 99.7% of students drive between 5.5212 miles and 13.7730 miles to
*At least 75% of students drive between -2.7306 miles and 22.0248 miles to
*At least 75% of students drive less than 22.0248 miles to
*About 95% of students drive between 1.3953 miles and 17.8989 miles to
*At least 75% of students drive between 1.3953 miles and 17.8989 miles to
*About 95% of students drive less than 22.0248 miles to 
*At least 88.9% of students drive between 1.3953 miles and 17.8989 miles to
*About 99.7% of students drive less than 22.0248 miles to
*About 95% of students drive between -2.7306 miles and 22.0248 miles to
*At least 88.9% of students drive less than 22.0248 miles to
*About 68% of students drive between -2.7306 miles and 22.0248 miles to

In: Math

You buy a 75-W lightbulb in Europe, where electricity is delivered to home at 240 V

You buy a 75-W lightbulb in Europe, where electricity is delivered to home at 240 V. If you use the lightbulb in the United States at120 V (assume its resistance does not change). how bright will it be relative to 75-W 120-V Bulbs? [ Hint: assume roughly that brightness is proportional to power consumed]

In: Physics

V=[(a b), a,b E R+] with (a1 b1)+(a2 b2)=(a1a2 b1b2)and for c E R, c(a b)=(a^c...

V=[(a b), a,b E R+] with (a1 b1)+(a2 b2)=(a1a2 b1b2)and for c E R, c(a b)=(a^c b^c) is a vector space over R. Define T:R^2 to V by T[a b]= (e^a e^b). prove T is a linear transformation from R2 to V.

In: Advanced Math

For the voltaic cell, Cr(s) │ Cr3+ (aq, 0.24 M) ││ Fe2+ (aq, (?) M) │...

For the voltaic cell, Cr(s) │ Cr3+ (aq, 0.24 M) ││ Fe2+ (aq, (?) M) │ Fe(s) , Ecell is 0.33 V. Calculate the concentration of Fe2+ (M). Reduction potential for Cr3+(aq)/Cr(s) is -0.74 V, Fe2+(aq)/Fe(s) is -0.44 V. Enter number to 2 decimal places.

In: Chemistry

Watch the videos on gender and children's programming. Discuss how a television show, movie, video game,...

Watch the videos on gender and children's programming. Discuss how a television show, movie, video game, or advertising portrays the sexes in a stereotypical way. Be sure to use specific examples to illustrate your position.

http://www.youtube.com/watch?v=5oyGGwjPbLw

http://www.youtube.com/watch?v=8CWMCt35oFY

http://www.youtube.com/watch?v=Nx8RRIiP53Q

In: Psychology

Suppose you have purchased 1,000 BHP common stocks in Australia since August 2019.

Suppose you have purchased 1,000 BHP common stocks in Australia since August 2019. (students are required to get the relevant data by themselves)

  1. Please list the monthly closing prices of BHP common stock in Australia from August 2019 to July 2020. Using the monthly closing prices to calculate:

  2. The holding period rate of return from August 2019 to July 2020.

  3. The holding period rate of return from August 2019 to July 2020, if you use a margin account with 40% of initial margin (ignore the interest paid on margin loans).

The holding period rate of return from August 2019 to July 2020 if you purchased only 500 BHP common stocks.         

In: Finance

Consider the following: 1. Banks that lend money to customers,2. Consumers use credit cards for purchases,3.retired...

Consider the following: 1. Banks that lend money to customers,2. Consumers use credit cards for purchases,3.retired people on fixed incomes,4. college students taking out student loans

In the reading it argues that inflation redistributes income,that is not neccessarily fair or equitable Some people and companies are more vulnerable than others. Some people and companies can adjust income to combat higher prices and redistribution.

1.List the four above from least to most vulnerable.

2. In paragraphs 1-4 explain why you ranked them in this order,and how they can adjust spending and income?

3. Paragraph 5, explain why you selected the ranking you did?

In: Economics