The salary corresponding to z equals 1 is? Solution: Given Data: The population mean $(\mu) = 54,109$The population standard deviation $(\sigma) = 10,410$The z-score $(z) = 1$ Solution: The salary corresponding to $z = 1$ : $x = \mu +…
Consider the hypothesis test Null Hypothesis: H0: p1 – p2 ≤ 0Alternative Hypothesis: Ha: p1 – p2 > 0 The following results are for independent samples taken from the two populations: Sample 1: n1 = 200, p1 = 0.22Sample 2:…
Assuming that the population of tread wear indexes is normally distributed, construct a 90% confidence interval estimate of the population mean tread wear index for tires produced by this manufacturer under this brand name, round to two decimal places as…
(a) What is the probability that the website has fewer than 5 million visitors in a single day? If needed, round your answer to four decimal digits. (b) What is the probability that the website has 3 million or more…
Answer: Given Data: The Population Mean $(\mu)= 76 $ The Population Standard Deviation $(\sigma) = 7.6 $ The Sample Size $(n)=32 $ Solution: The probability that average final exam grade of this sample is between 75 and 80: $P(75 <…
Answer: The Probability of success $ (p) = 0.10 $ The Sample size $ (n) = 10 $ Solution: The probability that more than 2 were caused by violent actions: $P(x > 2) = 1 – P(x \leq 2)$ $P(x…
Answer:Given data: The probability of success, $p = 0.70$Sample size, $n = 4$ (a) The indicated probability can be calculated by considering binomial distribution as: $P(x = 0) = (nCx) * p^x * (1 – p)^{n – x} $ $P(x…