The number of daily visitors to a boba tea shop follows a normal distribution with a mean of 5000 and a standard deviation of 800. The shop owner wants to figure out what a likely range of outcomes is for their daily visitors. What is the upper bound to an interval in which the number of daily visitors will fall 85% of the time? Provide your answer rounded to the nearest visitor.

How does a smaller sample size affect the width of the confidence interval?

The time spent by customers on a website follows a normal distribution with a mean of 25 minutes and a standard deviation of 5 minutes. What is the probability that a customer’s time spent on the website will be between 17 minutes and 29 minutes? Provide the correct numerical answer as a decimal, rounded to three decimal places.

Create a function summation(*args) that takes any number of numerical arguments and returns their sum.

What is on the inside of Gawain’s shield?

The diameter of propellers for drones follows a normal distribution with a mean of 8 inches and a standard deviation of 0.2 inches. What is the probability that a propeller’s diameter will be between 7.78 inches and 8.16 inches? Select the correct Excel function statements to calculate this probability.

Write a Python program to demonstrate slicing with strings and lists. Show how to access specific elements and sublists or substrings.

What is the primary difference between standard deviation and standard error?

An algorithm is a set of precise step-by-step instructions that describe how to accomplish a desired task or solve a problem in a finite amount of time.

The waiting time for a customer service call follows a normal distribution with a mean of 10 minutes and a standard deviation of 2 minutes. The call center manager wants to figure out what a likely range of outcomes is for their waiting times. What is the lower bound to an interval in which the waiting time will fall 95% of the time? Provide your answer rounded to one decimal place.