Question

1. A certain population follows a Normal distribution, with mean μ and standard deviation =2.5. You...

1. A certain population follows a Normal distribution, with mean μ and standard deviation =2.5. You collect data and test the hypotheses H0: μ= 1, Ha: μ 1 and obtain a P-value of 0.082. What is your conclusion?

Homework Answers

Answer #1

1)

Here,

Let us say we are testing the hypothesis using 5% level of significance, then if the P-value comes out to be less than the level of significance, then we reject the Null hypothesis, otherwise we accept the null hypothesis.

In this case, P-value is 0.082, which is greater than 0.05, thus we do not have sufficient evidence to reject the null hypothesis, so we accept the null hypothesis and say that .

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
IQ scores follow a Normal distribution with a mean μ = 100 and standard deviation σ...
IQ scores follow a Normal distribution with a mean μ = 100 and standard deviation σ = 15. A SRS of 31 seventh-grade girls in one school district is tested and the sample mean x¯¯¯x¯ was = 102 . Is there evidence that the mean IQ score in this district is different from from 100? The alternative hypothesis is: Ha: u < 100 Ha: u > 100 Ha: u ≠ 100 The test statistic, z =....... (+ 0.01) P(z )...
While testing a claim about population mean, if the value of the population standard deviation σ...
While testing a claim about population mean, if the value of the population standard deviation σ is not known, then the distribution we use:CHOOSE    Binomial Distribution Standard Normal Distribution None Student's t-Distribution With H0: p = 0.4, Ha: p < 0.4 , the test statistic is z = – 1.68. Using a 0.05 significance level, the P-value and the conclusion about null hypothesis are:    0.0465; reject H0 0.093; fail to reject H0 0.9535; fail to reject H0 0.0465;...
a.) Given a normal distribution with population standard deviation of 21 and a mean of μ...
a.) Given a normal distribution with population standard deviation of 21 and a mean of μ = 29. If a random sample of size 62 is drawn, find P(29 ≤ x ≤ 31). Round to three decimal places. b.) Find the positive z value such that 89% of the standard normal curve lies between –z and z. (Use 2 decimal places.) c.) For a standard normal curve, find the area between z = 0.28 and z = 1.95. (Use 4...
Given a normal distribution with population standard deviation of 2 and a mean of μ =...
Given a normal distribution with population standard deviation of 2 and a mean of μ = 10. If a random sample of size 69 is drawn, find P(10 ≤ x ≤ 12). Round to three decimal places.
Suppose for a certain population we do not know the value of population standard deviation (σ),...
Suppose for a certain population we do not know the value of population standard deviation (σ), and we want to test: H0: μ ≥ 30 against Ha: μ < 30. We are going to perform the test using a sample of size 43. What assumptions do we need about population distribution? A. Since sample size is small, we assume the population is normally distributed. B. Since sample size is sufficiently large, we do not need any assumption about population distribution....
The level of calcium in the blood of healthy young adults follows a normal distribution with...
The level of calcium in the blood of healthy young adults follows a normal distribution with mean μ = 10 milligrams per deciliter and standard deviation σ = 1.2. A clinic measures the blood calcium of 100 healthy pregnant young women at their first visit for prenatal care. The mean of these 100 measurements is  x bar = 9.8.  Is this evidence that the mean calcium level in the population from which these women come is less than 10?  To answer this, test...
The waiting time for customers at MacBurger Restaurants follows a normal distribution with a population standard...
The waiting time for customers at MacBurger Restaurants follows a normal distribution with a population standard deviation of 3 minute. At the Warren Road MacBurger, the quality assurance department sampled 49 customers and found that the mean waiting time was 16.25 minutes. At the 0.05 significance level, can we conclude that the mean waiting time is less than 17 minutes? Use α = 0.05. a. State the null hypothesis and the alternate hypothesis. H0: μ ≥            H1: μ...
The waiting time for customers at MacBurger Restaurants follows a normal distribution with a population standard...
The waiting time for customers at MacBurger Restaurants follows a normal distribution with a population standard deviation of 5 minute. At the Warren Road MacBurger, the quality assurance department sampled 84 customers and found that the mean waiting time was 13.75 minutes. At the 0.05 significance level, can we conclude that the mean waiting time is less than 15 minutes? Use α = 0.05. a. State the null hypothesis and the alternate hypothesis. H0: μ ≥            H1: μ...
Suppose the random variable X follows a normal distribution with mean μ=52 and standard deviation σ=10....
Suppose the random variable X follows a normal distribution with mean μ=52 and standard deviation σ=10. Calculate each of the following. In each case, round your response to at least 4 decimal places. a) P(X < 41) = b) P(X > 61) = c) P (47 < X < 67) =
6.The expected mean of a normal population is 100, and its standard deviation is 12. A...
6.The expected mean of a normal population is 100, and its standard deviation is 12. A sample of 49 measurements gives a sample mean of 96. Using the α = 0.01 level of significance a test is to be made to decide between “population mean is 100” or “population mean is different than 100.” a) State null H0. b) What conclusion can be drawn at the given level of significance α = 0.01. c) What conclusion can be drawn if...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT