Statistical t-tests for means

Assignment Help Basic Statistics
Reference no: EM13108718

The publisher of Celebrity Living claims that the mean sales for personality magazines that feature people such as Angelina Jolie or Paris Hilton are 1.5 million copies per week. A sample of 10 comparable titles shows a mean weekly sales last week of 1.3 million copies with a standard deviation of 0.9 million million copies. Does this data contradict the publisher's claim? Use a 0.01 significance level. Show all work.

Reference no: EM13108718

Questions Cloud

Find whether right-hemisphere damage results : For following data, find out whether or not right-hemisphere damage results in significantly decreased performance on spatial skills task.
Estimate sustainable growth rate : Company 'x' has retention rate of 50%, sales $25000, beginning equity $50000, profit margins of 10%, asset turnover ratio of .75 and debt of $10000.
Critical value and z statistic : Use the critical values for z of 1.65 and a p level of approximately 0.10, or 10%. For each of the following values, determine if you would reject or fail to reject the null hypothesis:
Which of the regulatory mechanisms is most important : During hemorrhagic shock in which blood pressure is decreased, which of the regulatory mechanisms is most important is increasing cardiac output to help maintain blood pressure?
Statistical t-tests for means : The publisher of Celebrity Living claims that the mean sales for personality magazines that feature people such as Angelina Jolie or Paris Hilton are 1.5 million copies per week.
Distinguish between the use of lipids, carbohydrates : A cell can use many kinds of organic molecules as fuel for cellular respiration. Distinguish between the use of lipids, carbohydrates and proteins.
Why are the hospitalized patients more at risk for utis : Why are the hospitalized patients more at risk for UTIs? Which are some of the most common nosocomial infections other than UTIs and why is it hard to treat them?
Research hypothesis with mean differences : Pedro wants to know if the weight loss of his group on the chocolate-only diet is representative of weight loss in a large population of middle aged men.
Make a table comparing the corresponding chemoautothroph : Note that chemoautotroph bacteria has a an opposite counterpart in heterotroph bacteria that use anaerobic respiration ( have an electron aceptor an inorganic compound different from oxygen).

Reviews

Write a Review

Basic Statistics Questions & Answers

  Simulation using crystal ball

Develop a spreadsheet model to determine the optimal number of magazines to order each day. Use 500 replications and round the demand values generated by the normal random number generator (RNG) to the closest integer value.

  Lower control limit for proportion defective

Critically discuss the lower control limit for a proportion defective if the average daily production is 5000 units and the average fraction defective is .02?

  Determining acceptance sampling

An assembly line turns out 10% deffectives. Determine an acceptance number and sampling plan for samples of size 14 and a producers risk of 3%. (AQL = 10)).

  Estimating the required probability

Estimate the probability the store will gross over $850 a) At least 3 out of 5 business days.

  Normal probability of tire life

A Tire company has developed a new type of tire. Extensive testing shows that the number of miles the new tire will run before wearing out is normally distrubuted with a mean of 40,000 miles and a standard deviation of 4,000 miles

  Testing hypothesis using a critical value

Using a critical value, test hypothesis at the 1% level of significance.

  Mcqs on time series-statistics

The overall model statistically adequate at a 0.05 level of significance for predicting sale price(y)? For a moving average which is not true?

  Coefficient of determination-interpretation

Compute the coefficient of determination, r 2 , and interpret its meaning.

  Probability of approximating real numbers with rationals

We want to show that a real number, chosen at random from the interval [0,1], can be approximated to within 1/(n²) by rational numbers of the form k/n.

  Percentile of the thickness distribution

The shell thicknesses of the eggs produced by a large flock of hens follow approximately a normal distribution with mean equal to 0.38 mm and standard deviation equal to 0.03 mm. Find the 95th percentile of the thickness distribution.

  Probability and probability table

Use this information to construct a probability table, and then calculate each of the following probabilities: P(foreign car)

  Hypothesis test for difference between mean equal variance

Test hypothesis that mean weight of 2 sheets are equal against alternative that they are not(suppose equal variances). Use α=0.05 and suppose equal variances. Determine the P value.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd