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250 8 200 150 100 50 2 2 Normal score Figure 1.29 Normal quantile plot for the T-bill interest rates. These data are not approximately Normal. 6000 5000 o 4000 3000 2000 1000 0 2 4 Normal score Figure 1.30 Normal quantile plot for the length of time required to start a business. Suriname, with a time of 694 days, has been excluded Consider the sample of time data presented in Figure 1.29

Would you feel comfortable applying the t procedures in this case?

A) Yes, the t procedure would be appropriate.

B) No, the t procedure would not be appropriate.

math   Statistics-And-Probability   
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Answer #1

right choice is B) No, the t procedure would not be appropriate.

The plot called Normal is the normal quantile plot for a normal distribution and appears as a diagonal linear pattern. here it is not diagonal linear so samples are not coming from the normal distribution.

since for the t-test sample should be from normal distribution so t-procedure is not appropriate/applicable.

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