Bus 224 Chapter 10 Questioins.xlsx

Bus 224 Chapter 10 Questioins.xlsx - Descriptive statistics...

Info icon This preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Descriptive statistics # 1 count 5 mean 17.00 sample standard deviation 3.54 sample variance 12.50 minimum 12 maximum 21 range 9 standard error of the mean 1.58 skewness -0.57 kurtosis -0.69 coefficient of variation (CV) 20.80%
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
15) 18 15 12 19 21 A: Using the table of t-distribution with 5-1 =4 degresses of freedom for the probabilty 0.01 of a one tail test:t Null hyothesis will be rejeced if the value of the test is less than B: On tab Q15 stat: mean 17 and Sample Standard Deviation 3.54 Plug in play -1.895 C: Since -1/895>-3.747 The null hypothesis is not rejected. There is no evidence that the population mean is less than 20 D: Software give the p-value is between 0.05 and 0.01 0.065 H(sub0):μ≥ 20 H(sub1):μ≤20 t=17-20/(3.54/√5)=
Image of page 2
the value of t is 3.747 n -3.747( as for less than) 4
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Descriptive statistics Messages count 12 mean 82.50 sample standard deviation 59.49 sample variance 3,539.36 minimum 21 maximum 203 range 182 population variance 3,244.42 population standard deviation 56.96 confidence interval 95.% lower 48.84 confidence interval 95.% upper 116.16 margin of error 33.66 z 1.96 confidence interval 95.% lower 44.70 confidence interval 95.% upper
Image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern