o test Ho: u= 50 versus H1: u< 50, a random sample of size n=22 is obtained from a population that is known to be normally distributed. Complete parts (a) through d) below. E Click here to view the t-Distribution Area in Right Tail. ) If x = 46.3 ands = 12.3, compute the test statistic. = - 1.411 (Round to three decimal places as needed.) p) If the researcher decides to test this hypothesis at the a = 0.05 level of significance, determine the critical value(s). Although technology or a t-distribution table can e used to find the critical value, in this problem use the t-distribution table given. ritical Value: Round to three decimal places. Use a comma to separate answers as needed.)

solve for image  and find critical values

An accountant is studying how much American families donate each year to charity. The accountant states the average yearly amount donated to charity by American families is different than 5.5 thousand dollars. If we would like to test the accountant's claim with a hypothesis test using a significance level of α=0.01 , what is the rejection region? Use the graph below to show the rejection region. First, move the blue dot to choose the appropriate test (left-, right, or two- tailed). Then, slide the shaded region(s) to represent the rejection region.

At a stop sign, some drivers come to a full stop, some come to a rolling stop (not a full stop, but slow down), and some do not stop at all. Test if there is an association between gender and type of stop (full, rolling, or no stop). Data is collected by standing a few feet ISTOPI from a stop sign and taking note of the type of stop and the gender of the driver. Below is a contingency table summarizing the data that was collected. Do the data provide enough evidence to show that there is an association between gender and type of stop (full, rolling, or no stop)? Test at the 3% level and round expected values to one decimal place. Туре of Stop (Observed) Male (Expected Value) Female (Expected Value) Male Female Row (Observed) Total Full Stop Rolling Stop No 8 18 26 15 22 37 12 8 20 Stop Column 35 48 83 Total H: Hypotheses H.: Select an answer and Select an answer v are Select an answer v Ha: Select an answer v and Select an answer v are Select an answer v Original Claim: Select an…