B) is it one or two sided C) what is the value of the test statistic D) what is
ID: 3041169 • Letter: B
Question
B) is it one or two sided
C) what is the value of the test statistic
D) what is the p value
A store owner surveyed 25 randomly selected customers and found the ages shown (in years). The mean is 27.16 and the standard deviation is 11.04. The owner wants to know if the mean age of all customers is 21 years old. Use the given information to complete parts a through f. 27 27 18 13 38 21 16 12 15 47 20 42 40 31 16 35 25 36 30 21 48 16 19 41 25 a) What is the null hypothesis? (Type an integer or a decimal.)Explanation / Answer
The statistical software output for this problem is:
One sample T summary hypothesis test:
: Mean of population
H0 : = 21
HA : 21
Hypothesis test results:
Hence,
a) Null hypothesis: H0 : = 21
b) It is a two sided test.
c) Test statistic = 2.79
d) p - Value = 0.0102
Note - Please round off the values as per the question demands.
Mean Sample Mean Std. Err. DF T-Stat P-value 27.16 2.208 24 2.7898551 0.0102Related Questions
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