A health psychologist tests a new intervention to determine if it can change healthy behaviors among siblings. To conduct the this test using a matched-pairs design, the researcher gives one sibling an intervention, and the other sibling is given a control task without the intervention. The number of healthy behaviors observed in the siblings during a 5-minute observation were then recorded.

(a) Test whether or not the number of healthy behaviors differ at a 0.05 level of significance. State the value of the test statistic. (Round your answer to three decimal places.)

(b) Compute effect size using eta-squared. (Round your answer to two decimal places.)

To demonstrate flavor aversion learning (that is, learning to dislike a flavor that is associated with becoming sick), researchers gave one group of laboratory rats an injection of lithium chloride immediately following consumption of saccharin-flavored water. Lithium chloride makes rats feel sick. A second control group was not made sick after drinking the flavored water. The next day, both groups were allowed to drink saccharin-flavored water. The amounts consumed (in milliliters) for both groups during this test are given below.

(a) Test whether or not consumption of saccharin-flavored water differed between groups using a 0.05 level of significance. State the value of the test statistic. (Round your answer to three decimal places.) ?

(b) Compute effect size using eta-squared (η²). (Round your answer to two decimal places.)
η² =

For the year 2009, the table below gives the percent of people living below the poverty line in the 26 states east of the Mississippi River. Answer the following questions based on this data. State Percent Alabama 7.5 Connecticut 7.9 Delaware 14.9 Florida 13.2 Georgia 12.1 Illinois 10.0 Indiana 9.9 Kentucky 11.9 Maine 13.3 Maryland 10.9 Massachusetts 7.9 Michigan 15.8 Mississippi 9.1 State Percent New Hampshire 14.6 New Jersey 8.3 New York 9.1 North Carolina 12.1 Ohio 13.6 Pennsylvania 10.5 Rhode Island 8.2 South Carolina 12.5 Tennessee 10.0 Vermont 7.3 Virginia 10.4 West Virginia 10.5 Wisconsin 16.1 Calculate the standard deviation for this sample data. Do NOT round during the course of your calculations. Round only your final answer to two decimal places. (5 pts.)

With one method of a procedure called acceptance sampling, a sample of items is randomly selected without replacement and the entire batch is accepted if every item in the sample is okay. The ABC Electronics Company has just manufactured 1950 write-rewrite CDs, and 50 are defective. If 6 of these CDs are randomly selected for testing, what is the probability that the entire batch will be accepted?

Last year, 45% of business owners gave a holiday gift to their employees. A survey of business owners conducted this year indicates that 35% plan to provide a holiday gift to their employees. Suppose the survey results are based on a sample of 80 business owners.

(A) How many business owners in the survey plan to provide a holiday gift to their employees this year?

(B) Suppose the business owners in the sample did as they plan. Compute the p-value for a hypothesis test that can be used to determine if the proportion of business owners providing holiday gifts has decreased from last year.

Find the value of the test statistic. (Round your answer to two decimal places.)

Find the p-value. (Round your answer to four decimal places.)

p-value =

(C) Using a 0.05 level of significance, would you conclude that the proportion of business owners providing gifts decreased?

Reject H₀. There is sufficient evidence to conclude that the proportion of business owners providing holiday gifts has decreased from last year.

Do not reject H₀. There is sufficient evidence to conclude that the proportion of business owners providing holiday gifts has decreased from last year.

Reject H₀. There is insufficient evidence to conclude that the proportion of business owners providing holiday gifts has decreased from last year.

Do not reject H₀. There is insufficient evidence to conclude that the proportion of business owners providing holiday gifts has decreased from last year.

(E) What is the smallest level of significance for which you could draw such a conclusion? (Round your answer to four decimal places.)

I have heard students say in the past "I hope this teacher grades on a curve." What do they mean by this? Is it beneficial to you or not?

Please explain your work. Thanks.

Compute the probability of each of the following poker hands occurring (poker hand = 5 cards dealt out of a regular 52-card deck, the order does not matter). For the following explanations, let the letters u, v, w, x, y, z indicate face values (i.e. ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, jack, queen, king). Please note that aces can be either high (that is, they come after the king sequentially) or low (that is, they act like a “one”), but never both at the same time.

a. Royal flush (10, jack, queen, king, ace; all of the same suit)

b. Straight flush (not royal) (five sequential cards, all of the same suit)

c. Four of a kind (x, x, x, x, y)

d. Flush (not straight or royal) (five cards, not all sequential, of the same suit)

e. Straight (not royal or flush) (five sequential cards, not all of the same suit)

f. Full house (x, x, x, y, y) g. Three of a kind (x, x, x, y, z)

h. Two pairs (x, x, y, y, z) i. At least 4 face cards (face cards are jacks, queens, and kings)

j. No more than one ace

What would my null and alternative hypothesis be for the health questions: to what extend does the age of MI patients vary by gender?

In a survey of​ four-year colleges and​ universities, it was found that 255 offered a liberal arts degree. 110 offered a computer engineering degree. 481 offered a nursing degree. 30 offered a liberal arts degree and a computer engineering degree. 211 offered a liberal arts degree and a nursing degree. 86 offered a computer engineering degree and a nursing degree. 25 offered a liberal arts​ degree, a computer engineering​ degree, and a nursing degree. 33 offered none of these degrees.

A.  How many​ four-year colleges and universities were​surveyed? There were ___​four-year colleges and universities surveyed. Of the​ four-year colleges and universities​ surveyed, how many offered

B.  a liberal arts degree and a nursing​ degree, but not a computer engineering ​degree? There are ____ ​four-year colleges and universities that offer a liberal arts degree and a nursing​degree, but not a computer engineering degree.

C.  a computer engineering ​degree, but neither a liberal arts degree nor a nursing​ degree? There are ____ ​four-year colleges and universities that offer a computer engineering ​degree, but neither a liberal arts degree nor a nursing degree.

D.  a liberal arts​ degree, a computer engineering​ degree, and a nursing​ degree? There are ____ ​four-year colleges and universities that offer a liberal arts​ degree, a computer engineering​ degree, and a nursing degree. Enter your answer in each of the answer boxes.

among the thirty largest us cities, the mean one-way commute time to work is 25.8 minutes. the longest one-way travel time is in new york city, where the mean is 37.7 minutes. assume the distribution of travel time in new york city follows the normal probability distribution and the standard deviation is 6.7 minutes.

A. What percent of the New York City commutes are for less than 27 minutes? (Round your intermediate calculations and final answer to 2 decimal places)

B. What percent are between 27 and 33 minutes?  (Round your intermediate calculations and final answer to 2 decimal places)

C. What percent are between 27 and 47 minutes?  (Round your intermediate calculations and final answer to 2 decimal places)

A die is weighted so that rolling a 1 is two times as likely as rolling a 2, a 2 is two times likely as rolling a 3, a 3 is two times as likely as rolling a 4, a 4 is two times a likely as rolling a 5, and a 5 is two times as likely as rolling a 6. What is the probability of rolling an even number?

1. To benchmark their performance against competing healthcare institutions, a radiology center wants to know the average time taken by their staff to do an MRI test. A sample of 50 randomly selected MRI tests yielded a sample average of 47 minutes and a sample standard deviation of 9 minutes. The distribution of testing time, however, is highly skewed to the right.

   1. Suggest a plausible reason for the distribution of the MRI testing time to be right skewed.

   2. Why can one still make an inference about the average MRI testing time even though the

      distribution is skewed right?

   3. Compute a 90% confidence interval for the average MRI testing time

suppose you want to determine the mean number of cans of soda drunk each month by students in their twenties at your school. Describe a possible sampling method in three to five complete sentences.

2M2_IND3. Prices of diamond jewelry are based on the “4Cs” ofdiamonds: cut, color, clarity, and carat. A jeweler is trying to estimate the price of diamond earrings based on color, carats, and clarity. The jeweler has collected some data on 22 diamond pieces and the data is shown in Worksheet IND3. The jeweler wouldlike to build a multiple regression model to estimate the price of the pieces based on color, carats, and clarity.a)Prepare a scatter plot showing the relationship betweenthe price and each of the independent variables.b)If the jeweler wanted to build a regression model using only one independent variable to predict price, which variable should be used?c)Why?d)How do you use the value of Significance F in the model with only one independent variable?e)If the jeweler wanted to build a regression model using twoindependent variables to predict price, which variable should be addedto the variable selected in the one independent variable model?f)Why?g)If the jeweler wanted to build a regression model using three independent variables to predict price, which variable should be addedto the variables selectedfor the two variable model?h)Why?i)Based on your best model, how should the jeweler price a diamond with a color of 2.75, a clarity of 3.00, and a weight of 0.85 carats?j)How do you use the value of Significance F in the multiple regression model?k)Does there appear to be any multicollinearity among the independent variables?l)How can you tell if you have multicollinearity?

An experiment consists of flipping a coin 5 times and noting the number of times that a heads is flipped. Find the sample space SS of this experiment.