1) Write out the Null and Alternative hypotheses both in your own words and in notation form with the symbolsbelow.You words:Notation:Ho: HhoursH hours2) Develop Decision Rule and find the Z-score that represents the Critical Value at 95% confidence and thecorresponding alpha level:3) Compute Sample Statistics by finding the obtained Z-score for our sample using z = (X - )/se; where se =o/ VN.SE -Zetuiced -4) Compare our obtiined z-score with the critical z-score and determine whether we should reject the nullhypothesis:5) Fully interpret the results in terms of your hypotheses, including the approximate probability our null hypothesiswould be correct in a perfect world: A study conducted by the research institute of America has concluded that the mean number of hours a person spends intheir car during a typical week in 1999 I5 hours. Given that times have changed in the past 20 years in terms ofemployment rates and public transit, it is reasonable to believe people spend more or less time in their car every week.Because we can see it going either way, we want to test the null hypothesis that the people spend 15 hours in their caragainst our alternative hypothesis that people spend a different amount of time in the car in 2019 compared to 1999.To test this hypothesis, assume we distributed a survey to 100 randomly selected adults in San Antonio as asked themabout their driving background. We found the following information:Sample Statistics:I time spent in a car = 18.3 hours (SD = 11.7)Use this information to complete ALL 5 steps of hypothesis testing. You should

Given: Sample mean, x¯=18.3Sample sd, s=11.7Sample size, n=100α=0.05

Answered: A study conducted by the research…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose the observational units in a study are the patients arriving at an emergency room on a given day, 11 Nov 2019. For the following indicate whether it can legitimately be considered a variable or not: Whether or not men have to wait longer than women yes no
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You may need to use the appropriate appendix table or technology to answer this question. In a study entitled How Undergraduate Students Use Credit Cards, it was reported that undergraduate students have a mean credit card balance of $3,173. This figure was an all-time high and had increased 44% over the previous five years. Assume that a current study is being conducted to determine if it can be concluded that the mean credit card balance for undergraduate students has continued to increase compared to the original report. Based on previous studies, use a population standard deviation ? = $1,000. (a) State the null and alternative hypotheses. H0: ? < 3,173 Ha: ? ≥ 3,173 H0: ? = 3,173 Ha: ? ≠ 3,173 H0: ? > 3,173 Ha: ? ≤ 3,173 H0: ? ≥ 3,173 Ha: ? < 3,173 H0: ? ≤ 3,173 Ha: ? > 3,173 (b) What is the test statistic for a sample of 170 undergraduate students with a sample mean credit card balance of $3,305? (Round your answer to two decimal places.) What is…
According to a 2006 survey conducted by the Center for Disease Control and Prevention (CDC), birth rates peak slightly between July and October each year. While a slight numerical increase in birth rates is often observed, this difference is assumed to be statistically non-significant. Thus, we would expect to see an equal number of people born during each month of the year in the United States. The "Birth Data.jasp" contains the birth months for 1380 babies (N = 1380) born during the year 2006 in the United States collected by the CDC. Conduct a Chi-Square Goodness of Fit Test at α = 0.05, to see if the number of babies born each month “fits” with the CDC’s assumptions about the population. Identify the correct null hypothesis. A. H0: The number of babies born throughout the year is equal across all 12 months B. H0: The number of babies born during the summer months is greater than the number of babies born during the rest of the year C. HA: The number of babies born in…
On average, a sample of n = 36 scores will provide a better estimate of the population mean than a sample of n = 49 scores from the same population.
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It seems that of engaged women buy a wedding dress at least one size smaller than their current size. Why? Cornell researchers reported an alarming tendency for women who are engaged to sometimes attempt to lose an unhealthy amount of weight prior to their wedding (Neighbors & Sobal, 2008). The researchers found that engaged women weighed, on average, 152.1 pounds. The average ideal wedding weight reported by 227 women was 136.0 pounds. The data below represent the fictional weights of eight women on the day they bought their wedding dress and on the day they got married. Did women lose weight for their wedding day? Dress purchase Wedding day 163 158 144 139 151 150 120 118 136 132 158 152 155 150 145 146 Conduct the six steps of hypothesis testing using a one-tailed test and an alpha level of 0.05. Report the test statistic in APA format. Calculate the confidence interval for the paired-samples t test that you conducted in part (a). Compare the…

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