Of interest is whether the percent of managers at High Tech Inc. that pay over $8 per day for lunch is the same as the percent of technicians. Sixty managers are surveyed and forty-six of them pay over $8 per day for lunch. One hundred forty-nine techniciansare surveyed and ninety-eight of them pay over $8 per day for lunch. The hypothesis test to use is????   independent group means, population standard deviations known   independent group means, population standard deviations unknown   matched or paired samples   two proportions

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Q: What is the purpose of the confidence intervals in Statistics?

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Q: In a survey, 28 people were asked how much they spent on their child's last birthday gift. The…

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A: Answer: From the given data, Sample size (n) = 30 Sample mean (x⏜) = $ 70125 Population standard…

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A: For Sample 1 x̄1 = 63.05 s1 = 8.37 n1 = 9 For Sample 2 x̄2 = 58.20…

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A: The value of mean is 0.84, which is obtained as follows:

Q: illustrates the effect of the standard deviation & the type of test (one-tailed or two) on the…

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A: We have given that  Sample size=n=23 Mean=mu=37 Standard deviation=S=4 90% confidence level

Q: What are the null hypothesis ( H0 ) and the alternative hypothesis ( H1 ) that should be used for…

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A: Independent samples t test: The independent samples t-test can be used to examine a possible…

Q: According to the Runzheimer International, a typical business traveler spends an average of $281 per…

A: Here, µ = $281, σ = 47, and n = 65.

Q: a. The null and alternative hypotheses would be: Ho: Select an answer H₁: Select an answer Select an…

A: Given,two independent samples. - level of significance.The sub-parts need to be answered.

Q: If the distribution of scores were normally distributed, the following would be true? -Mean = 36.5,…

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Q: How would you explain conducting a scatter graph to someone who has never heard of correlation (but…

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Q: Explain the relationship between the population mean ?, sample mean ?̅, and a value of the sample…

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Q: In a survey, 31 people were asked how much they spent on their child's last birthday gift. The…

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Q: Why is it important to report both a measure of central tendency and variability to describe a set…

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Q: the distribution of sample means consists of the

A:

Q: Here are 6 celebrities with some of the highest net worths (in millions of dollars) in a recent…

A: According to the given information, we have Total number of given celebrities = 6

Q: In a survey, 29 people were asked how much they spent on their child's last birthday gift. The…

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Q: In a survey, 23 people were asked how much they spent on their child's last birthday gift. The…

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Q: IQ tests are approximately normally distributed with a mean of 100 for adults. A tech company CEO…

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A: The mean is $214 and the standard deviation is $38.

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A: Margin of error is the error due to random sampling. The margin of error decreases with increase in…

Q: One personality test available on the World Wide Web has a subsection designed to assess the…

A: Given Data: x¯=152s=28   a) Null and Alternate Hypothesis: H0: μ=148 H1: μ>148

Q: Find the margin of error at a 98% confidence level.

A: