- Home Assignment Name (Lass, First) 10 The heights of the adults in one town ha
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- Home Assignment Name (Lass, First) 10 The heights of the adults in one town have a mean of 67.1 incbes and a standard deviation of 3 Qhat can you conclude from Chebyshey's theorem about the percentage of adults in the oan whose beights are between 60. 1 and 74 1 nches? A) The percentage is approximately 95% B)The percentage is at most 75% C) The percentage is least 95% D) The percentage is at least 75% Problem 11: Determine whether the given value is a statistic or a parameter After taking the first exam, 15 of the stadents dropped the class A) Statistic B) Parameter Problem 12: Determine which of the four levels of measarement (nominal, ordinal, interval, ratio) is most appropriate A) Ratio BOrdinal C) Nominal D) Interval B) Nominal Interva A) Ratio D) Ordinal Problem 13 Accordi ing to recent studies, a woman platelet count has a mean of 280 with a standard deviation of 65. The shape of the distribution is bell-shaped. What is your estimation, according to the Empirical Rulk, of the percemtage of women with platelet com a) between 215 and 3457 b) More than 410? Problem 14 Scores on a test have a mean of 66 and a standard deviation of 9. Michelle has a score of $7 Convert Michelle's score to a z-score D) 9 B) -9 A) Problem 15: For the same data in problem 14,find Mary's original score in the test if i5 1.5.(Convert Mary's 2 score into her test score) c)75 D) It cannot be determined B)-79.5 A) 79.5 Problem 16: In a certain data on weekly salaries the mean is $500 and the standard deviation is $50. if you cannot assume anything about the shape of the distribution, give an estimate of the percent of salaries in the data that are between $400 and $600. C) At least 75% D) it cannot be determined B) At most 50% A) At least 68%Explanation / Answer
Problem 10.
k = (67.1-60.1)/3.5 =2
1- 1/4=3/4
D) The percentage of atleast 75%
Problem 11.
A) Statistic
Problem 12.
SAT Scores : Ratio
Nationalities : Nominal
Problem 13.
(a) within 1 SD of the mean , lies 68%of the women.
(b) more than 410, which is more than 2 SD in one direction , so 2.5% of the women are expected to have weights more than 410.
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