7. A data set includes 108 body temperatures of healthy adulthumans having a mean of 98.3 F° and a standard deviation of 0.69F°. Construct a 99​% confidence interval estimate of the mean bodytemperature of all healthy humans. What does the sample suggestabout the use of 98.6 F° as the mean body​ temperature?
What is the confidence interval estimate of the population meanµ​?
____F°<µ<____ F°
​(Round to three decimal places as​ needed.)
What does this suggest about the use of 98.6 F° as the meanbody​ temperature?
A.This suggests that the mean body temperature could be lowerthan 98.6 F°.
B.This suggests that the mean body temperature could be higherthan 98.6 F°
C.This suggests that the mean body temperature could verypossibly be 98.6 F°.
8. An IQ test is designed so that the mean is 100 and thestandard deviation is 14 for the population of normal adults. Findthe sample size necessary to estimate the mean IQ score ofstatistics students such that it can be said with 95​% confidencethat the sample mean is within 7 IQ points of the true mean. Assumethat σ= 14 and determine the required sample size using technology.Then determine if this is a reasonable sample size for a real worldcalculation.
The required sample size is
nothing. ​(Round up to the nearest​ integer.)
Would it be reasonable to sample this number of​ students?
Yes. This number of IQ test scores is a fairly small number.
Yes. This number of IQ test scores is a fairly large number.
No. This number of IQ test scores is a fairly large number.
No. This number of IQ test scores is a fairly small number
