A random sample of 149 recent donations at a certain blood bank reveals that 87 were type A blood. Does this suggest that the actual percentage of type A donations differs from 40%, the percentage of the population having type A blood? Carry out a test of the appropriate hypotheses using a significance level of 0.01.   Calculate the test statistic and determine the P-value. (Round your test statistic to two

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A: given data n = 16x¯ = 84.5s = 11.2α = 0.01claim : μ = 80

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A: Given z= -2.806  where z is standard normal variable. Formulae used: P value= P(Z<z)

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A: The pooled variance is, Thus, the pooled variance is 13.333.

Q: A data set includes data from student evaluations of courses. The summary statistics are n 96, x=…

A: Here we've to test that if mu= 3.50 or not. So null hypothesis, Ho: mu= 3.50 And H1: mu=! 3.50…

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