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1525 Stats
Asked: Jan 04,2019In: Hypothesis testing

Hypothesis testing for mean with t-test

t-test
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1525 Stats
Asked: Jan 04,2019 In: Hypothesis testing
Answer
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1397 Stats
Asked: Jan 05,2019In: R

How to run independent t-test in R - studio

r-studio t-test independent t-test
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1397 Stats
Asked: Jan 05,2019 In: R
Answer
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1670 Stats
Asked: Jan 21,2019In: Hypothesis testing

One group was shown only the video portion of the commercial, and the second group was shown the ad with both audio and video.

descriptive-statistics t-test summary-statistics
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1670 Stats
Asked: Jan 21,2019 In: Hypothesis testing
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1764 Stats
Asked: Jan 22,2019In: Hypothesis testing

A random sample of 15 customers in two different banks were selected and their wait times (in minutes) are given below.

t-test comparison-of-two-groups f-statistic
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1764 Stats
Asked: Jan 22,2019 In: Hypothesis testing
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1 Solutions
2132 Stats
Asked: Jan 22,2019In: Hypothesis testing

In a study of the cognitive skills required for successful arguments, 62 psychology graduate students were equally divided into two groups.

hypothesis-testing t-test
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1 Solutions
2132 Stats
Asked: Jan 22,2019 In: Hypothesis testing
Answer
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1 Solutions
3212 Stats
Asked: Jan 22,2019In: Hypothesis testing

A problem with a telephone line that prevents a customer from receiving or making calls is upsetting to both the customer and the telephone company.

t-test difference-in-means hypothesis-testing Excel-functions p-value in excel
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1 Solutions
3212 Stats
Asked: Jan 22,2019 In: Hypothesis testing
Answer
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1 Solutions
831 Stats
Asked: Jul 22,2019In: Distributions

A survey of 25 randomly selected customers found the ages shown​ (in years)

How to find degrees of freedom for t-test
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831 Stats
Asked: Jul 22,2019 In: Distributions
Answer
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1 Solutions
896 Stats
Asked: Jul 24,2019In: Distributions

A survey of 25 randomly selected customers found the ages shown​ (in years). The mean is 33.12 years

degrees of freedom for t-test
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896 Stats
Asked: Jul 24,2019 In: Distributions
Answer
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647 Stats
Asked: Jul 24,2019In: Distributions

A random sample of 18 purchases showed the amounts in the table​ (in $). The mean is ​$50.91   and the standard deviation is ​$24.40

degrees of freedom for t-test
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1 Solutions
647 Stats
Asked: Jul 24,2019 In: Distributions
Answer
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1 Solutions
651 Stats
Asked: Jul 24,2019In: Distributions

Find the critical value t Superscript star for the following situations

Finding critical values of t-test
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651 Stats
Asked: Jul 24,2019 In: Distributions
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