Question

To test Ho = 50 versus Hy < 50, a random sample of size n=23 is obtained from a population that is known to be normally distributed. Complete parts (a) through (d) below. Click here to view the t-Distribution Area in Right Tail (a) If x = 46 4 and s= 12.9, compute the test statistic. to-(Round to three decimal places as needed) (b) 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 be used to find the critical value, in this problem use the t-distribution table given Critical Value (Round to three decimal places Use a comma to separate answers as needed.)

a through d please

Answer 1

Here Vs Ho: M = 50 Hi! M 250 me 23 oč = 46, S-12.9. Griven a) Test statistie, to 3 K-H 46 - 50 S (SO 12:9 23 3-14871 -1.487 - a (b) -1-025 =0.05, df -m-1-22, Caitical value, . & ta -1.7171 = 0.975 is a left tailed t-test (C) - This :: This graph depicts the critical region. -ta to of 4-1717 Here (d) to > ta : Fail to reject Ho. -1.711.487 So the correct option A. A. No. Because the test statistic does not fall in the critical region.