A random sample of 46 observations was selected

Assignment Help Basic Statistics
Reference no: EM13240684

A random sample of 46 observations was selected from a normally distributed population. The sample mean was xbar=81, and the sample variance was s2=35.0. Does the sample show sufficient reason to conclude that the population standard deviation is not equal to 7 at the 0.05 level of significance? Use the p-value method.

Reference no: EM13240684

Questions Cloud

Describe a contemporary woman who demonstrates : Whether a wife or a courtesan, a lady of the Renaissance was expected to exemplify the qualities outlined by Castiglione in The Courtier, though some women chose to assert their higher intellectual abilities. Identify and describe a contemporary woma..
Average campaign contributions of democrats : One-half of a sample receives an incentive in a mail survey. The other half does not. A comparison of response rates is desired.
Define what are the three nuclides which form from pb-210 : The nuclide Pb-210 undergoes three successive decays (beta, alpha, and beta, respectively) to form a stable nuclide. What are the three nuclides which form from Pb-210 in this decay series
American occupation of the philippines : Following the Spanish-American War, and especially in regard to American occupation of the Philippines, most anti-imperialists argued that
A random sample of 46 observations was selected : A random sample of 46 observations was selected from a normally distributed population. The sample mean was xbar=81, and the sample variance was s2=35.0. Does the sample show sufficient reason to conclude that the population standard deviation is not..
Select a variable that will enable you to compare proportion : Select a variable that will enable you to compare proportions of two groups. Use sample sizes of at least 30. Use the z test for proportions to analyze the data.
What was principal work of society of jesus-renaissance : An important feature of the Italian Renaissance was an emphasis on. The Medici family and the Popes played a significant part in the Renaissance as. Which was NOT a characteristic of the Renaissance? What was the principal work of the Society of Jesu..
Find the speed of the golf ball : High speed stroboscopic photographs show that the head of a 181 g golf club is traveling at 55.4 m/s, Find the speed of the golf ball just after impact
Explain lead and iron are common alloying elements : Lead and iron are common alloying elements found in brass. Would the presence of these elements complicate the analysis of brass

Reviews

Write a Review

Basic Statistics Questions & Answers

  Problem of bayes analysis

Assume that a patient is believed to have one of two diseases, denoted by D1 and D2 with P(D1)=0.40 and P(D2)=0.60 and that medical research has determined the probability associated with each symptom that may accompany the diseases.

  Information about normal probability distribution

The monthly income of residents of Dayton is normally distributed with a mean of $3000 and a standard deviation of $500.

  Explain significance level to test the professor-s claim

Students that studied for more than one hour received a c+ or above on the final. Use a .05 significance level to test the professor's claim.

  Determining hypothesis test and proportion

A prof. can't decide how to vote on a tuition increase for the students at her univ. The incrase is supposed to pay for new student parking and there appears to be mixed feelings. The prof.

  Calculate test statistic used for conducting test

Assume the population standard deviation is 7.1 mpg. State the correct null and alternative hypotheses that the company wishes to test. Calculate the test statistic that would be used for conducting the desired test.

  Cohort study-crude relative risk and adjusted relative risk

Researchers at the Brigham & Women's Hospital recruited 2,000 participants to study the relation between diet and cholesterol.

  Normal model useful for describing slalom times

If a Normal model is useful for describing slalom times, approximately how many of the other 35 skiers finishing the event would you expect skied the slalom faster than Jean-Baptiste?

  How one make sense of surface in more than three dimensions

When there is more than two predictors, one can no longer graph the tted surface in the usual way. How then does one make sense of a surface in more than three dimensions?

  Calculate arithmetic mean age of uninsured senior citizens

Calculate the arithmetic mean age of the uninsured senior citizens to the nearest hundredth of a year. Identify the median age of the uninsured senior citizens

  Creating raw score predictions on criterion variable

Create raw score predictions on criterion variable for persons with Z scores on predictor value of -2,-1,0,+1,+2.

  Determine if number of breakdowns is independent of shift

The number of breakdowns is dependent on the shift, because the test value 11.649 is less than the critical value of 12.592.

  Computing critical value using one-tailed upper-tail test

If hypothesis test for single population variance is to be conducted by using significance level of to 0.10, a sample size of n = 16, and test is a one-tailed upper-tail test, the critical value is?

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