Giving a test to a group of students, the grades and gender are summarized below   A B C Total Male 20 18 7 45 Female 5 17 4 26 Total 25 35 11 71 Let p represent the population proportion of all female students who received a grade of A on this test. Use a 80% confidence interval to estimate p to four decimal places if possible.a.   _____ < p <_____

The data below represents the daily high temperature (in 0F) recorded at the Mount Washington Observatory in New Hampshire for the first 15 days of February 2021. Use the given data to answer questions 1 - 8. Source: https://www.mountwashington.org                                                                            15 21 25 16 21 14 13 -1 6 -2 -6 15 16 21 22   A. What is the first quartile Q1?___________________________ B. What is the third quartile Q3?_________________________ C. Calculate the range._________________ D. A typical data value lies how far from the mean? (Hints: Consider the computed standard deviation) ________________

Refer to the data set in the accompanying table. Assume that the paired sample data is a simple random sample and the differences have a distribution that is approximately normal. Use a significance level of 0.05 to test for a difference between the weights of discarded paper (in pounds) and weights of discarded plastic (in pounds). In this example, Hd is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the weight of discarded paper minus the weight of discarded plastic for a household. What are the null and alternative hypotheses for the hypothesis test? OA. Ho: Hd #0 H₁: Hd>0 O C. Ho: Hd #0 H₁: Hd=0 Identify the test statistic. t= (Round to two decimal places as needed.) B. Ho: Hd=0 H₁: Hd #0 O D. Ho: Hd = 0 H₁: Hd <0 More Info Household Paper 16.39 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 POTBRANN~~~~~~~ 7.57 11.42 6.44 20.12 2.41 6.05 2.80 13.61 13.05 17.65 8.72 6.16 7.72 7.98 6.38 6.67 6.98 29 11.08 5.86…

The data show the number of hours of television watched per day by a sample of 28 people. Use technology to answer parts (a) and (b) below. 0 9 00 6 8 = 5 5 3 0 F3 4 3 4 -6 a. Find the data set's first, second, and third quartiles. Q₁ = Q₂ = Q3 (Type integers or decimals. Do not round.) 5 1 2 3 7 3 9 287 5 9 2 b. Draw a box-and-whisker plot that represents the data set. Choose the answer below. Note that different technologies will produce slightly different results. O A. B. 670 9 6 3 2 0 -co C. 0 3 6 -S 9 N