Assuming the life length of batteries is normally

Assuming the life length of batteries is normally distributed, if you wish to conduct this test using a .05
level of significance, what is the critical value that you should use? Place your answer, rounded to 3
decimal places in the blank. For example, -1.234 would be a legitimate entry. -1.729
Question 17 of 20 0.0/ 1.0 Points
Accepted characters : numbers, decimal point markers (period or comma), sign indicators (-), spaces
(e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation). NOTE: For scientific
notation, a period MUST be used as the decimal point marker.
Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values.
For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not.
Suppose a firm that produces light bulbs wants to know whether it can say that its light bulbs typically
last more than 1500 hours. Hoping to find support for their claim, the firm collects a random sample of n
= 25 light bulbs and records the lifetime (in hours) of each bulb. The information related to the
hypothesis test is presented below.
Test of H
0
: 1500 versus H
1
: > 1500
Sample mean 1509.5
Sample standard deviation 24.27
What is the test value that you would use to conduct this test? Place your answer, rounded to 3 decimal
places in the blank. For example, 1.234 would be a legitimate entry. 1.711
Comment: Sample Size n = 25

DF = 24
Sample Mean = 1509.5
Sample stdev = 24.27
Ho: µ ≤ 1500
H1: µ > 1500
Hypothesized Mean = 1500
t = 1.957
Part 3 of 3 - 3.0/ 3.0 Points
Question 18 of 20 1.0/ 1.0 Points
A one-tailed alternative is one that is supported by evidence in either direction.
Question 19 of 20 1.0/ 1.0 Points
A low p–value provides evidence for accepting the null hypothesis and rejecting the alternative.
Question 20 of 20 1.0/ 1.0 Points
The p-value of a test is the smallest level of significance at which the null hypothesis can be rejected.
True

False
Answer Key: True