Please provide explanation for answers below. Thank you! 51. The performance of
ID: 3041809 • Letter: P
Question
Please provide explanation for answers below. Thank you!
51. The performance of four groups must be compared. The sample size is small and the distributions are not normally distributed. Which of the following tests would be appropriate?
a.) two sample t
b.) Mann-Whitney
c.) Kruskal-Wallis
d.) One sample t
57. The calculated p-value for a One Sample Sign test is 0.246 Using the conventional value for p, the null hypothesis cannot be rejected.
True or False
58. Parametric tests that rely on the assumption of normality can deliver erroneous conculsions when sample sizes are small.
True or False
59. Which of the following tests require that distributions from which samples are taken is normally or close to normally distributed?
a.) Mann-Whitney
b.) Kkruskal-Wallace
c.) One sample t
d.) One sample sign
60. The median statistic is used in nonparametric hypothesis tests because the median is less sensitive to extreme values like those foun din a skewed distribution.
True or False
Explanation / Answer
51:
Since population is not normally distributed so non parametric test will be used. Since we need to compare more than 2 groups so c.) Kruskal-Wallis will be used.
57:
Since p-value is large so we fail to reject the null hypothesis.
Answer: true
58:
true
59:
c.) One sample t
60:
True
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