# MAT201 Basic Statistics SLP 4 First Try Quiz Jan -2020.docx...

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MAT201 Basic Statistics SLP 4 First Try Quiz Jan -2020.docx

View Test Prep - MAT201 Basic Statistics SLP 4 First Try Quiz Jan -2020.docx from MAT 201 at Trident University International.

Question 1   ( 3 points ) Using a random sample of n = 36 , the sample mean is 13.5 . Suppose that the population standard deviation is σ = 3 . The null and alternative hypotheses are below . Calculate the p value . ? o: μ = 15 ?? : μ ≠ 15
A Question 1 options :
A ) 0
B ) 1.220
C ) 0.0122
D ) 0.122
Question 2   ( 3 points ) Which one of the following can not represent a null hypothesis ?
Question 3   ( 3 points ) Using a random sample of n = 49 , the sample mean is 199.5 . Suppose that the population standard deviation is σ = 14 . The null and alternative hypotheses are below . Calculate the p value . Ho : μ ≤ 195 Ha : μ > 195
Question 4   ( 3 points ) Using a random sample of n = 36 , the sample mean is 2.92 . Suppose that the population standard deviation is σ = 0.18 . Is the above statistical evidence sufficient to make the following claim that µ < 3 . ? o: μ≥ 3 H ? : μ < 3 α = 0.05 . p value = 0.004 Interpret the results using the p value test .
Question 5   ( 3 points ) According to the National Association of Colleges and Employers , finance graduates make an average of ( µ ) \$ 52,402 a year . The standard deviation of annual salaries of finance graduates is ( σ ) \$ 7,000 . A random sample of 100 accounting graduates show that the sample mean salary is \$ 54,390 . If we were to increase the sample size ( n ) from 100 to 144 , the z score will :
A Question 5 options :
A ) stay the same .
B ) be zero .
Question 6   ( 3 points ) We want to test whether the mean retirement savings of families between the ages of 56 and 61 is \$ 163,577 . State the null and alternative hypothesis .
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