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Recent questions tagged introductory-statistics

A company is reviewing a batch of 25 products to determine if any are defective. On average, 3.5% of products are defective. What is the probability that the company will find 2 or fewer defective products in this batch?

asked Apr 27, 2023 in Statistics by Libbybaybee

An electronics manufacturer test every 50th cell phone to verify that it is functioning properly. Identify the kind of sample that is being used.

asked Dec 21, 2022 in Statistics by cmccorkle772

Complete the following probability distribution table

asked Nov 7, 2022 in Statistics by Kikivincent101

A random variable is...

asked Feb 13, 2022 in Statistics by mmarley

The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 10 years. A random sample of 50 cars had an average age of 9.5 years. It is believed that the population standard deviation for the age of cars is 3.4 years. The Department of Transportation would like to set α = 0.10. The critical value for this hypothesis test would be ________.

asked Dec 18, 2021 in Statistics by Prasad

A laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 188 milligrams with s = 12.7 milligrams. Construct a 95% confidence interval for the true mean cholesterol content of all such eggs. Assume that the population is normally distributed.

asked Dec 3, 2021 in Statistics by lida21296

For the given data , construct a frequency distribution and/or frequency histogram of the data using five classes to describe the shape of the data as symmetric, uniform, skewed left, or skewed right

asked Sep 19, 2021 in Mathematics by lida21296

A city in the Pacific Northwest recorded its highest temperature at 91 degrees Fahrenheit and its lowest temperature at 12 degrees Fahrenheit for a particular year. Use this information to find the upper and lower limits of the first class if you wish to construct a frequency distribution with 7 classes

asked Sep 19, 2021 in Mathematics by lida21296

The median is defined as the __________.

asked Sep 9, 2021 in Business by chrispeacock

The range is defined as __________.

asked Sep 9, 2021 in Business by chrispeacock

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