Get help from the best in academic writing.

# How much does a sleeping bag cost? Let’s say you want a sleeping bag

Question How much does a sleeping bag cost? Let’s say you want a sleeping bag that should keep you warm in temperatures from 20°F to 45°F. A random sample of prices (\$) for sleeping bags in this temperature range is given below. Assume that the population of x values has an approximately normal distribution. 95 70 110 75 95 100 30 23 100 110 105 95 105 60 110 120 95 90 60 70 (a) Use a calculator with mean and sample standard deviation keys to find the sample mean price x and sample standard deviation s. (Round your answers to two decimal places.)(b) Using the given data as representative of the population of prices of all summer sleeping bags, find a 90% confidence interval for the mean price μ of all summer sleeping bags. (Round your answers to two decimal places.) lower limit \$ upper limit \$

## The paired samples shown in the accompanying table have been obtained

Question The paired samples shown in the accompanying table have been obtained from normally distributed populations. Construct a 9595​% confidence interval estimate for the mean paired difference between the two population means.LOADING… Click the icon to view the data table.Let muμdequals=muμ1minus−muμ2. Construct a 9595​% confidence interval estimate for the mean paired difference between the two population means.nothingless than or equals≤mu Subscript dμdless than or equals≤nothing​(Round to four decimal places as​ needed.)

## ​If, in a​ (two-tail) hypothesis​ test, the​ p-value is 0.0055

Question ​If, in a​ (two-tail) hypothesis​ test, the​ p-value is 0.0055 0.0055​, what is your statistical decision if you test the null hypothesis at the 0.040.04 level of​ significance?Choose the correct answer​ below?A.Since the​ p-value is greatergreater than alpha commaα, rejectreject Upper H 0 .H0.B.Since the​ p-value is lessless than alpha commaα, do not rejectdo not reject Upper H 0 .H0.C.Since the​ p-value is lessless than alpha commaα, rejectreject Upper H 0 .H0.D.Since the​ p-value is greatergreater than alpha commaα, do not rejectdo not reject Upper H 0 .

## For the following hypothesis​ test, determine the null and alternative

Question For the following hypothesis​ test, determine the null and alternative hypotheses.​ Also, classify the hypothesis test as​ two-tailed, left-tailed, or​ right-tailed. The mean length of imprisonment for​ motor-vehicle theft offenders in this country is 19.219.2 months. A hypothesis test is to be performed to determine whether the mean length of imprisonment for​ motor-vehicle theft offenders in this city differs from the national mean of 19.219.2 months. Choose the correct null and alternative hypotheses below.A.Upper H 0H0​: muμgreater than

## Fill in the blank to complete the statement.If we rejectreject

Question Fill in the blank to complete the statement.
If we reject

reject the null hypothesis when the statement in the nullnull hypothesis is​ true, we have made a Type​ _______ error.If we rejectreject the null hypothesis when the statement in the nullnull hypothesis is​ true, we have made a Type ▼ IIIIUpper II error.

## Coal is carried from a mine in West Virginia to a power plant in New

Question Coal is carried from a mine in West Virginia to a power plant in New York in hopper cars on a long train. The automatic hopper car loader is set to put 65 tons of coal into each car. The actual weights of coal loaded into each car are normally distributed, with mean μ = 65 tons and standard deviation σ = 1.5 ton. (a) What is the probability that one car chosen at random will have less than 64.5 tons of coal? (Round your answer to four decimal places.)

### Essay Writing at Proficient Essay

5.0 rating based on 10,001 ratings

Rated 4.9/5
10001 review

Review This Service

Rating: