Question

Apychologist obtain a random sample of 19 mothers in the first trimester of their pregnancy. The mothers are ked to play donical man the house at least 30 minutes each day they give birth Aer years, the child is addered an i st. It is known that is re a lly distributed with a mean of 100. If the is of the children in the study in a sample mean of 175 and sample standard deviation of 12. Is there evidence that the children have her ? Use the a 0.10 level of significance Complete parts a tough (4) Click here love the standard norma t ion 11 hertow. standard normal station le 21 Click here to view the table forta l es (al Determine the nul and arrative Hypotheses C HUVUD Type Integer or decimals. Do not round.) th) Identify the best statistice (Round to two decimal places as needed) Approximate the The values in the range (5) State the conclusion for the best OA Do no t became the value is greater than the 0.10 level of significance OB Reel because the r e than the 0.10 level of cance OC. Do not because the s trate 0.10 level of cance OD Reject because th i s less than the 0.10 of significance Click to select your answers MacBook Air delet

Answer 1

Solution :- Given That :- X= 19 107.5 100 S= 12 DF= DF= a = C.IN n-1 18 0.1 90% Hypothesis : Test Statistic :- x-u Ho: u = 100 H1: > 100 te This is a right tailed Test 7.5 2.752989 t statistic = 2.72 t Critical Value:- By using t value table at a = 0.1 t Critical Value = 1.33 t stat = 2.72 > t critical = 1.33 It is concluded that Null Hypothesis is rejected. P - Value:- By using P value table at t = P Value = 2.72 0.007 P-Value = 0.007 < Significance Level = 0.1 Conclusion: Reject Ho because the p value is less than alpha=0.10 level of significance.