Test that two population means are equal

Assignment Help Basic Statistics
Reference no: EM13103133

A hypothesis will test that two population means are equal. A sample of 10 with a standard deviation of 3 is selected from the first population and a sample of 15 with a standard deviation of 8 from the second population. The standard deviations are not equal. Testing the claim at the 0.01 level, what is the critical value? Assume unequal standard deviations.

Reference no: EM13103133

Questions Cloud

How policies of harry truman vary from lyndon johns : Explain how policies of Harry Truman, George Marshall, and George Kennan during early Cold War years vary from those of Lyndon Johnson and Robert McNamara in 1960's.
Determining standard distribution and probability : Assume that the population of heights of male college students is approximately normally distributed with mean m of 68 inches and standard deviation s of 3.75 inches. A random sample of 16 heights is obtained.
At what angle is the cord from the vertical : a 50 kg toy airplane is suspended from the ceiling by a 1.6m cord and rotates in a horizontal circle. If the cord makes an angle of 35 degrees with the vertical, A) Find the speed of the plane B) Find the tension in the cord
Question about random probability : Suppose that patrons of a restaurant were asked whether they preferred beer or whether they preferred wine. 70% said that they preferred beer. 60% of the patrons were male. 80% of the males preferred beer.
Test that two population means are equal : A hypothesis will test that two population means are equal. A sample of 10 with a standard deviation of 3 is selected from the first population and a sample of 15 with a standard deviation of 8 from the second population.
Probability calculation for binomial variable : The past history shows that 60% of employees prefer Starbucks brand coffee. A sample of 5 employees is selected, what is the probability that less than 3 prefer Starbucks?
Estimate planning function of management : Examine the influence which legal issues, ethics, and corporate social responsibility have had on management planning at chosen company. Give at least one example for each.
What is the maximum number of chips : computer chips are etched on circular cylinder wafers of thickness 0.60mm that are sliced from a solid cylindrical silicon crystal of length 30cm . If each wafer can hold 100 chips, what is the maximum number of chips that can be produced from one..
Description of compute a probability : An urn contains 8 balls identical in every respect except color. There are 4 blue balls, 3 red balls, and 1 white ball.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Descriptive statistics for problem like minimum-maximum

Aggregate the opinions of the experts by computing the minimum, maximum, 25 th  percentile, 50 th  percentile, and 75 th  percentile values.

  Compute the two groups using paired sample t-test

Compute the two groups using Paired sample t-test. Compute which modification reduced the number of traffic accidents

  What extent did removal of the outlier improve the fit

Assume that Los Arboles had a special program in place to encourage helmet use. Elucidate to what extent did removal of the outlier improve the fit.

  Pairs of points yielded a correlation coefficient

Ten pairs of points yielded a correlation coefficient y of 0.79. If a=0.05, which of the following statements is correct if H 0:P=0? (Do not calculate a t-value.)

  Multiple regression models using spss

Set up dummy coded dummy variables to contrast each of the other groups to Group 2, medium Anxiety; run a regression to predict exam performance (Y) from these dummy coded dummy variables.

  Data on coupon redemption

An online book store wants to determine if there is an association between coupon redemption and gender. After a special coupon broadcast to its reward members, the following data on coupon redemption at check out were collected.

  Confidence interval for the true mean weight

Construct a 90 percent confidence interval for the true mean weight. Describe factors which might cause variation in the weight of Tootsie Rolls during manufacture.

  One-way anova and post-hoc test using spss

In this paragraph, be sure to make it clear how you handled the issue of conducting three planned comparisons. Also provide the ANOVA summary table for these results.

  Calculating the margin of error

Constructing a 95% confidence interval for the true length of time for all pepper seeds to germinate you must calculate the margin of error. The margin of error in this case is 0.60.

  Using p-value approach-interpret the value of p-value

(A) At the 0.05 level of significance, use the six step critical value approach to hypothesis testing to try and prove that the 2004 proportion has increased. (B) Use the 5 step p-value approach. Interpret the meaning of the p value.

  Determination-test for correlation coefficient

What is the relationship between the amount spent per week on food and the size of the family? Do larger families spend more on food?

  Correlation coefficient and causation

What does a squared correlation coefficient represent? Also, does the strength of the correlation depend on the direction? Finally, does correlation imply causation.

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