An article presents voltage measurements for a sample of 66 industrial networks in estonia. assume the rated voltage for these networks is 232 v. the sample mean voltage was 231.5 v with a standard deviation of 2.19 v. let μ represent the population mean voltage for these networks. find the p-value for testing h0 : μ = 232 versus h1 : µ ≠ 232. round the answer to four decimal places.

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = 232 V

Sample mean, = 231.5 V

Sample size, n = 66

Sample standard deviation, s = 2.19 V

Alpha, α = 0.05

First, we design the null and the alternate hypothesis

We use Two-tailed t test to perform this hypothesis.

Formula:

Putting all the values, we have

Now,

Since,              

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

191 students play sports and ninety-seven 10th graders were surveyed.

step-by-step explanation: