Test the claim about the population mean p at the level of significance alpha. A
ID: 3160537 • Letter: T
Question
Test the claim about the population mean p at the level of significance alpha. Assume the population is normally distributed. Claim: mu 35; alpha = 0.05; a sigma = 2.7 Sample statistics: x = 34.1, n = 35 Not enough information to decide. Reject H_0. There is enough evidence at the 5% level of significance to support the claim. Fail to reject H_0. There is not enough evidence at the 5% level of significance to support the claim. Find the equation of the regression line for the given data. y = 0.522x - 2.097 y = 2.09/x + 0.552 y D) v = -0.552x + 2.097 y = 2.097x - 0.552 Find the weighted estimate, p to test the claim that P_1 = P_2 Use alpha = 0.05. Assume the samples are random independent Samples statistics: R_T = 50; x1 = 35, and n2 = 60, x2 = 40 0.328 0.682 1.367 0.238Explanation / Answer
18.
Formulating the null and alternative hypotheses,
Ho: u = 35
Ha: u =/ 35
As we can see, this is a two tailed test.
Thus, getting the critical z, as alpha = 0.05 ,
alpha/2 = 0.025
zcrit = +/- 1.959963985
Getting the test statistic, as
X = sample mean = 34.1
uo = hypothesized mean = 35
n = sample size = 35
s = standard deviation = 2.7
Thus, z = (X - uo) * sqrt(n) / s = -1.972026594
Also, the p value is
p = 0.048606571
As |z| > 1.96, and P < 0.05, we REJECT THE NULL HYPOTHESIS.
Hence,
OPTION B. [ANSWER]
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