mean greater than 85 sec? Are the equremens all saisfied 90?5 547490552034557502

Question

mean greater than 85 sec? Are the equremens all saisfied 90?5 54749055203455750259 What reqrements ust be satisfed? Selet all that apply A Ether he pociation is nomalily distributed or m 30, or bth The conditions for a bionial sbuion must be sasted C. At least one rvon must be above or below 85 sc D. The sample obsevations must be a sinle random ?. No Tho sanele suis not great than 30 no sangto does not appear to be hom . roney danoma-hason, and nere smo omenons abos ate ?E w s Anom?quantle plot suggests that he same ishom a 'onnaby dstbuted population, and there are obseniors ative and below e5 see

Explanation / Answer

Before to solve the problem these points need to remembered. To perform the test statistic the necessary assumption are,

1) Siimple Random Sampling, such that data is collected using random sampling

2) The data values are normally distributed.

3) The large sample size (n>30) so that distribution follow normal distribution

4) Homogeneity of variances.

Now coming back to the problem

Question 1) Correct options are,

A. Either the population is normally distributed, or n > 30, or both

D. The sample observations must be a simple random sample

Question 2) Correct option is,

B. The sample size is not greater than 30, the sample size doesn't appear to be from a normally distributed population, and there is not enough information given to determine whether the sample is a simple random sample

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