Can someone please explain to me how to solve for this 1. Question 1 - Chapter 9
ID: 3260814 • Letter: C
Question
Can someone please explain to me how to solve for this
1. Question 1 - Chapter 9, Case 1 Examine question 9-44 on page 330. What is the distribution of the test statistic for this problem? A. normal (x) B. standard normal (z) C. Student t (t) D. Chi-squared (x2) 2. Question 2 - Chapter 9, Case 1 When working part a of question 9-44 (Ho) statement? on page 330, what is the correct null hypothesis A. Ho : = 155 B. Ho : 155 C. Ho : > 155 D. Ho : 155 3. Question 3 - Chapter 9, Case 1 When working part a of question 9-44 on page 330, what is the correct alternative (Hi) statement? A. H1 : = 155 B. H, : 155 C. H1 : > 155 D. H1 :Explanation / Answer
given n = 10
x^ = 154.2
standard deviation = 1.5
mean = 155
given it is normally distributed
H0:= 155 versusH1:155
formulea Z0 = (x^- mean ) /(/sqrt n)
= 154.2-155) /(1.5/sqrt10)
=-1.69
the table value Z a/2 = 2.58
so Zo <Z a/2 so accept H0:= 155 or reject H1:155
from above caluclations we can answer all 4 sums
1 ) as given in question it is normal distributed so option b is correct
2) null hypothesis H0:= 155 so option a is correct
3) alternate hypothesis is H1:155 so option b is correct
4)
formulea Z0 = (x^- mean ) /(/sqrt n)
= 154.2-155) /(1.5/sqrt10)
=-1.69
so option b