Part II. Testing the Hypothesis: Child development expert says that, on average, the attention span of a 4-5 year old child is 5 minutes. A kindergaten teacher wanted to test this among her 40 students, where she found that their average attention span was 6 minutes, with a standard deviation of 3.75 minutes. Test the claim that the alternative that the average time is not equal to 5 minutes, using a .05 level of significance. Give the 6 steps of testing the hypothesis, show the complete solution for the computation

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A: Given: Sample size(n)=200Sample meanx¯=108Sample standard deviation(s)=10

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A: Solution: Given information: n= 100 Sample size  x= 16.4 months Sample mean μ=15.8 months…

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A: Given observation 16 14 19 17 16 18 Sum =100

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A: A sample of 9 men and 21 women are considered.

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A: The paired t-test is used when: the sample sizes are equal. two samples are independent but the…

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A: Introduction: Denote μ0 as the pretest or hypothesized mean creativity score, σ as the population…

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A: Given: n = 10 x bar = 2.4 sample std deviation = s = 1.8

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A: The null hypothesis: H0:μ=36 And the alternative hypothesis: Hα:μ≠36 The test statistic is t=x-μ0sn

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A: Solution We will use t distribution to find CI.

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A: From the provided information, Sample size (n) = 22 Sample mean (x̄) = 210 Standard deviation (s) =…

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A: Here, p = 3.62% = 0.0362 So, q = 1 - p = 1 - 0.0362 = 0.9638 n = 300

Q: ype of Test: Null Hypothesis: Alternate Hypothesis: SE: Test Statistic: P-value: Decision:…

A: given     μ=30  , n=36   , x =32.2      s = 8.9  type of test      -  student  t test    null…

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A: Given Data : For Sample 1 x̄1 = 65.0 s1 = 6.0 n1 = 25 For Sample 2…

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A: The formula for z score in a hypothesis test is, z=x¯-μσn In the formula, x¯ is the sample mean, μ…

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Q: Arbitron Media Research Incorporated conducted a study of the iPod listening habits of men and…

A: The following information has been provided: n1=9                    n2=21x¯1=33…

Q: In a recent study on world​ happiness, participants were asked to evaluate their current lives on a…

A: Solution To find percentile we will use percentile in excel.

Q: Example 4 A firm that specializes in consumer credit counseling tests the hypothesis that the mean…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

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A: Given : Claim : There is a difference in the variation in the listening times for men and women.

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A: The mean is μ=100 and standard deviation is σ=15. The score is x=85 so it follows:…

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A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

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