In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 300 trials, the touch therapists were correct 140 times. Complete parts (a) through (d). ..... a. Given that Emily used a coin toss to select either her right hand or her left hand, what proportion of correct responses would be expected if the touch therapists made random guesses? 0.5 (Type an integer or a decimal. Do not round.) b. Using Emily's sample results, what is the best point estimate of the therapists' success rate? 0.467 (Round to three decimal places as needed.) c. Using Emily's sample results, construct a 90% confidence interval estimate of the proportion of correct responses made by touch therapists.

A psychologist would like to examine the effects of a new drug on the activity level of animals. Three samples of rats are selected with n = 5 in each sample. The rats in the first sample serve as a control and do not get any of the drug. The rats in the second group receive a small dose, and the rats in the third group each get a large dose of the drug. The psychologist records the activity level for each animal. The data from this experiment are presented below. no drug small dose large dose 2201O 22321 Complete the F-ratio table below. Source of Variance SS Between Groups Within Groups Total 53223 df MS F P-value

A Superintendent of Education wants to determine if test scores are independent of school location. The following table shows the number of students achieving a basic level in the following subjects. Test the claim at a = 0.01 that location of school and academic achievement are independent. Location of School Subject Reading Math Science Urban 43 42 38 Suburban 63 66 65

Residents in a city are charged for water usage every three months. The water bill is computed from a common fee, along with the amount of water the customers use. The last water bills for 40 residents from two different neighborhoods are shown in the histograms below.   Which of the following is a true statement comparing the water bills of the two neighborhoods? More homes on Front Street had water bills above $225 than on Pine Road. More homes on Pine Road had water bills under $150 than on Front Street. More homes on Pine Road had water bills above $200 than on Front Street. The same number of homes on both streets had water bills between $175 and $200.

Detergent manufacturers frequently make claims about effectiveness of their product. A consumer-protection service decided to test the five best selling brands of detergent in three water temperatures on their claim of producing the “whitest whites”.  One hundred and fifty white sheets were equally soiled.  Thirty sheets were washed in each of the five brands; 10 in cold water, 10 in warm water and 10 in hot water.  After washing, the “whiteness” was measured with laser equipment. Perform the appropriate post-hoc analyses and clearly state your conclusions about the performance of the different brands in lukewarm water.  Temperature Dtrgent1 Dtrgent2 Dtrgent3 Dtrgent4 Dtrgent5 Cold 66 83 70 44 84 Cold 87 62 75 59 67 Cold 55 61 62 47 99 Cold 41 85 68 60 85 Cold 68 75 72 79 73 Cold 49 78 92 62 74 Cold 52 68 70 73 76 Cold 57 66 71 64 82 Cold 66 93 74 69 79 Cold 62 81 80 81 79 Lukewarm 78 63 71 70 87 Lukewarm 65 47 88 80 100 Lukewarm 68 88 90 78 83 Lukewarm…

Given P(E or F) = 0.04, P(E) = 0.43, and P(F) = 0.18, what is P(E and F)

The predicted college GPA for a high school GPA of 3.8 and a college board score of 500 is (Round to the nearest tenth as needed.)

Given P(E or F) = 0.04, P(E) = 0.35, and P(F) = 0.26, what is P(E and F)?

Select one: A. H1:ud=0 B. H1:ud≠0 C. H1:ud>0 D. H1:ud

Women athletes at a certain university have a long-term graduation rate of 67%. Over the past several years, a random sample of 36 women athletes at the school showed that 21 eventually graduated. Does this indicate that the population proportion of women athletes who graduate from the university is now less than 67%? Use a 10% level of significance.   Find the P-value of the test statistic. (Round your answer to four decimal places.)   Sketch the sampling distribution and show the area corresponding to the P-value.