Questions from Business Statistics

Q: Clarksburg Bakery is trying to predict how many loaves to bake.

Clarksburg Bakery is trying to predict how many loaves to bake. In the past 100 days, the bakery has sold between 95 and 140 loaves per day. Here are a histogram and the summary statistics for the num...

Q: As a project for an Introductory Statistics course, students checked 6

As a project for an Introductory Statistics course, students checked 6 bags of Fritos marked with a net weight of 35.4 grams. They carefully weighed the contents of each bag, recording the following w...

Q: Every statement about a confidence interval contains two parts the level of

Every statement about a confidence interval contains two parts the level of confidence and the interval. Suppose that an insurance agent estimating the mean loss claimed by clients after home burglari...

Q: We work for the Watchdog for the Consumer consumer advocacy group.

We work for the Watchdog for the Consumer consumer advocacy group. We’ve been asked to look at a battery company that claims its batteries last an average of 100 hours under normal use. There have bee...

Q: How large are hamster litters? Among 47 golden hamster litters recorded

How large are hamster litters? Among 47 golden hamster litters recorded, there were an average of 7.72 baby hamsters, with a standard deviation of 2.5 hamsters per litter. 1. Create and interpret a 90...

Q: In a car rental company fleet, 70% of the cars

In a car rental company fleet, 70% of the cars are American brands, 20% are Japanese, and the rest are German. The company notes that manufacturers recalls seem to affect 2% of the American cars, but...

Q: The 2016 U.S. presidential election was unusual in several

The 2016 U.S. presidential election was unusual in several ways. First, the candidate who won the most electoral votes, Donald Trump, did not win the most popular votes. Second, several minor-party ca...

Q: The fastest horse in Kentucky Derby history was Secretariat in 1973.

The fastest horse in Kentucky Derby history was Secretariat in 1973. The scatterplot shows speed (in miles per hour) of the winning horses each year. What do you see? In most sporting events, performa...

Q: A high school senior uses the Internet to get information on February

A high school senior uses the Internet to get information on February temperatures in the town where he’ll be going to college. He finds a website with some statistics, but they are given in degrees C...

Q: In a survey of 1002 U.S. adults in December

In a survey of 1002 U.S. adults in December 2016 by Pew Research (www.journalism.org/2016/12/15/many-americans-believe-fake-news-is-sowing-confusion/), 64% of adult respondents say they think that mad...