The cross-tabulation data given below represent the number of males and females in a work group who feel overstressed and those who don't. Complete parts a through d below Overstressed? Female No Yes 10 6 Male 5 11 a. Write the hypotheses for the chi-square test for independence. Ho gender and overstress are independent H₁ gender and overstress are dependent b. Find the expected frequencies. Overstressed? Female Male Grand Total No 7.5 7.5 15 Yes 8.5 8.5 17 Grand Total 16 16 32 (Type integers or decimals rounded to two decimal places as needed.) c. Compute the chi-square statistic. 3.14 (Type an integer or decimal rounded to two decimal places as needed.) d. Find the chi-square critical value and p-value and draw a conclusion using a level of significance of 0.05. Find the chi-square critical value. (Round to three decimal places as needed.)

Channing Tatum wants to know: is the average height between veterans and non-veterans different? What test should he use? One Sample T-Test Paired T-Test Two sample t test, after checking for equal variance Two Sample T-Test

Assume the samples are random and independent, the populations are nomally distributed, and the population variances are equal. The table available below shows the prices (in dollars) for a sample of automobile batteries. The prices are classified according to battery type. At a = 0.10, is there enough evidence conclude that at least one mean battery price is different from the others? Complete parts (a) through (e) below. E Click the icon to view the battery cost data. (a) Let u1. P2. H3 represent the mean prices for the group size 35, 65, and 24/24F respectively. Identify the claim and state Ho and H. H Cost of batteries by type The claim is the V hypothesis. Group size 35 Group size 65 Group size 24/24F 101 111 121 124 D 146 173 182 278 124 140 141 89 (b) Find the critical value, Fo, and identify the rejection region. 90 79 84 The rejection region is F Fo, where Fo = (Round to two decimal places as needed.) (c) Find the test statistic F. Print Done F= (Round to two decimal places as…

The table shows the heart rate of students in a conditioning class after 1 minute of doing jumping jacks (beats per minute). 68 105 120 106 120 106 125 110 125 92 94 115 96 100 110 126 112 112 118 118 What is the first quartile of the observations? 106 102.5 105 O 100