Lianna would like to find out if a new type of therapy works. She recruits 15 patients with phobias and measures their phobia scores. Then, she gives them the therapy for 2 weeks. At the end of 2 weeks, she measures their phobia scores again. What test should Lianna use to examine her data? A. Paired samples t-test

A good shipment of product has 3% defective and a bad shipment has 6% of defective.If 50 samples are inspected and the maximum accepted number of defective is 3 units. Determine the producer’s risk. A. 0.065 B. 0.987 C. 0.935 D. 0.353 Thanks

Use the following information to answer the next three exercises. 1; 1; 2; 3; 4; 4; 5 ; 5; 6; 7; 7; 8; 9 39. What is the first quartile for this data? 40. What is the third quartile for this data? Use the following information to answer the next four exercises. This box plot represents scores on the final exam for a physics class.

Samantha took an exam in her statistics class and received 90 out of 100. Samantha thought that was a good score, but she wanted to know how high her score was in relation to the rest of the class. Her professor said her Z-score was -0.29. How should Samantha interpret her Z-score? a. Samantha’s score is 0.29 points above the class mean.b. Samantha’s score is 29% above than the class mean.c. Samantha’s score is 0.29 standard deviations above the class mean.d. Samantha’s score is 0.29 standard deviations below the class mean.

Compare the two grading systems. Round everything to two decimals. Grading System 1 Grading System 2 Test: 35% Final Exam: 15% Homework: 10% Projects: 40% Test: 40% Final Exam: 10% Homework: 20% Projects: 30% a.       You have an 90% test average, a 75% on your final exam, an 88% homework average and an 85% project average. What is your class average under each system? Which system do you prefer? b.       You are at the end of the semester and you want to know what you need to get on the final exam for an A (90%) in the class. You have an 88% test average, 93% homework average, and a 90% project average. What do you need to get on the final in each grading system? Give exact answers

Healthy Eating  Americans appear to be eating healthier. Between 1970 and 2013 the per capita consumption of broccoli increased 1200.5% from 0.5 to 6.4 pounds. A nutritionist followed a group of people randomly assigned to one of three groups and noted their monthly broccoli intake (in pounds). At a=0.05 is there a difference in means? Group A           Group B         Group C 2.0                      2.0                  3.7 1.5                       1.5                   2.5  0.75                    4.0                  4.0 1.0                       3.0                  5.1 1.3                        2.5                  3.8  3.0                       2.0                  2.9 Null Hypothesis Alternative Hypothesis Find the Critical Value Find the Variance of each sample F= Make the decision Summarize Show how to use the TI-84 and Excel to work out the problems.

HOW Do I solve this in EXCEL  In 2016, the Better Business Bureau (BBB) settled 80% of complaints they received in the US. Suppose you have been hired by the BBB to investigate the complains they received this year involving new car dealers. You plan to select a sample of new car dealer complaints to estimate the proportion of complaints the BBB is able to settle. Assume the population proportion of complaints settled for new car dealers is 0.8, the same as the overall proportion of complaints settled in 2016.   Suppose you select a sample of 200 complaints involving new car dealers. Show the sampling distribution of pbar. Based on a sample of 200 complaints, what is the probability that the sample proportion will be within 0.04 of the population proportion? Suppose you select a sample of 450 complaints involving new car dealers. Show the sampling distribution of pbar. Based on the smaller sample of only 450 complaints, what is the probability that the sample proportion will be within…

Net Worth. The Board of Governors of the Federal Reserve System publishes information on family net worth in the Survey of Consumer Finances. In 2010, the mean net worth of families in the United States was $498.8 thousand and the median net worth was $77.3 thousand. Which measure of center do you think is more appropriate? Explain your answer.

You are testing the claim that the proportion of men who own cats is larger than the proportion of women who own cats.You sample 200 men, and 20% own cats.You sample 120 women, and 75% own cats. Find the test statistic