Question

Suppose that BC financial aid alots a textbook stipend by claiming that the average textbook at BC bookstore costs $ 65.6. You want to test this claim.

The null and alternative hypothesis in symbols would be:

a)H0:μ≤65.6H0:μ≤65.6
H1:μ>65.6H1:μ>65.6

b) H0:μ≥65.6H0:μ≥65.6
H1:μ<65.6H1:μ<65.6

c) H0:p=65.6H0:p=65.6
H1:p≠65.6H1:p≠65.6

d) H0:p≥65.6H0:p≥65.6
H1:p<65.6H1:p<65.6

e) H0:μ=65.6H0:μ=65.6
H1:μ≠65.6H1:μ≠65.6

f) H0:p≤65.6H0:p≤65.6
H1:p>65.6H1:p>65.6

The null hypothesis in words would be:

a) The average of price of all textbooks from the store is greater than $ 65.6.

b) The proportion of all textbooks from the store that are less than 65.6 is equal to 50%

c) The average price of textbooks in a sample is $ 65.6

d) The average price of all textbooks from the store is $ 65.6

e) The average of price of all textbooks from the store is less than $ 65.6.

Based on a sample of 100 textbooks at the store, you find an average of 66.4 and a standard deviation of 14.2.

The point estimate is: [ ] (to 3 decimals)

The 90 % confidence interval (use z*) is: [ ] to [ ] (to 3 decimals)

Based on this we:

a ) Fail to reject the null hypothesis

b) Reject the null hypothesis

Answer 1