When we want to test a claim about two population means, most of the time we do not know the population standard deviations, and we assume they are no

coexpennan 2020-11-29 Answered
When we want to test a claim about two population means, most of the time we do not know the population standard deviations, and we assume they are not equal. When this is the case, which of the following is/are not true?
-The samples are dependent
-The two populations have to have uniform distributions
-Both samples are simple random samples
-Either the two sample sizes are large or both samples come from populations having normal distributions or both of these conditions satisfied.
You can still ask an expert for help

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more

Solve your problem for the price of one coffee

  • Available 24/7
  • Math expert for every subject
  • Pay only if we can solve it
Ask Question

Expert Answer

Alix Ortiz
Answered 2020-11-30 Author has 109 answers
Step 1
Given :
Here, we want to test a claim about two population means and assume the population standard deviations are not equal.
For this case, following conditions should be satisfied
The samples must be independent.
The two populations have to have uniform distributions
Both samples are simple random samples
Either the two sample sizes are large or both samples come from populations having normal distributions or both of these conditions satisfied.
Step 2
Hence,
The samples are dependent is not true.
Not exactly what you’re looking for?
Ask My Question

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more

Relevant Questions

asked 2021-02-27
The manager of the store in the preceding exercise calculated the residual for each point in the scatterplot and made a dotplot of the residuals.
The distribution of residuals is roughly Normal with a mean of $0 and standard deviation of $22.92.
The middle 95% of residuals should be between which two values? Use this information to give an interval of plausible values for the weekly sales revenue if 5 linear feet are allocated to the stores
asked 2021-05-03
Describe in words the surface whose equation is given. (assume that r is not negative.) θ=π4
a) The plane y=z where y is not negative
b) The plane y=z where y and z are not negative
c) The plane y=x where x and y are not negative
d) The plane y=x where y is not negative
e) The plane x=z where x and y are not negative
asked 2021-02-25
Explain why t distributions tend to be flatter and more spread out than the normal distribution.
asked 2021-09-01
A pair of dice is rolled three times. What are the odds of five-total rolling each time?
asked 2021-12-25
9. The purpose of statistical inference is to provide information about the.
a. sample based upon information contained in the population.
b. population based upon information contained in the sample.
c. population based upon information contained in the population.
d. mean of the sample based upon the mean of the population.
10. Random samples of size 81 are taken from an infinite population whose mean and standard deviation are 200 and 18, respectively. The distribution of the population is unknown. The mean and the standard error of the mean are.
a. 200 and 18.
b. 81 and 18.
c. 9 and 2.
d. 200 and 2.
asked 2021-01-22
What is the number called that determines each unique T distribution?
asked 2020-10-27
Two normally distributed variables have the same means and the same standard deviations. What can say about their distributions?