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# only the 2 circled questions.I need tutor Bolla to help with these questions

only the 2 circled questions.I need tutor Bolla to help with these questions
Answered Same Day May 27, 2021

## Solution

Aarti answered on May 28 2021
56)
Solution (a):
Given,
The population standard deviation is given, therefore, we use the standard normal distribution < Use Z table for 5% level of significance = 1.96
The required confidence interval lies between (96.828, 99.572). With 95% confidence, we can conclude that the population mean lies between the above mentioned lower and upper bound.
Solution (b):
Using the conversion of normal distribution to standard normal distribution,
The required probability is calculated as:

Therefore, 50% of the individuals would be expected to have body temperature more than 98.6F.
Solution (c):
The coolest 20% of all the individuals are located till:

Values are taken from the...
SOLUTION.PDF