# Assuming the life length of batteries is normally

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Assuming the life length of batteries is normally distributed, if you wish to conduct this test using a .05level of significance, what is the critical value that you should use? Place your answer, rounded to 3decimal places in the blank. For example, -1.234 would be a legitimate entry.-1.729
Question 17 of 200.0/ 1.0 PointsAccepted 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 scientificnotation, 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 typicallylast 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 thehypothesis test is presented below.Test of H0:1500 versus H1:> 1500Sample mean 1509.5Sample standard deviation 24.27What is the test value that you would use to conduct this test? Place your answer, rounded to 3 decimalplaces in the blank. For example, 1.234 would be a legitimate entry.1.711
Comment: Sample Size n = 25
DF = 24Sample Mean = 1509.5Sample stdev = 24.27Ho: µ ≤ 1500H1: µ > 1500Hypothesized Mean = 1500t = 1.957Part 3 of 3 -3.0/ 3.0 PointsQuestion 18 of 201.0/ 1.0 PointsA one-tailed alternative is one that is supported by evidence in either direction.
Question 19 of 201.0/ 1.0 PointsA low p–value provides evidence for accepting the null hypothesis and rejecting the alternative.
Question 20 of 201.0/ 1.0 PointsThe p-value of a test is the smallest level of significance at which the null hypothesis can be rejected.True
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Term
Spring
Professor
dc
Tags
Math, Null hypothesis, Statistical hypothesis testing, decimal point
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