Mathematics, 31.01.2022 01:30 glo251
A test has a mean grade of 75 with standard deviation of 5. The distribution of test grades is normal. What percent of the test grades are below 60?
Joe wants to find a 90% confidence interval for his mean running time for his usual route. He has sample data for 30 days of running. The mean time for the 30 days is 22 minutes with standard deviation of 2 minutes. What is the 90% confidence interval of his overall mean running time?
What is the margin of error for a 98% confidence interval if we have a sample mean of 50, sample standard deviation of 6, and a sample size of 100?
Find the boundaries of the middle 70% of the data in a normal distribution that has a mean of 40 and standard deviation of 4.
What proportion of the prices of a pair of sneakers are above $150 if the mean price is $95 and the standard deviation is $15. Assume the prices are nor
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Mathematics, 21.06.2019 18:20
The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.
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Mathematics, 21.06.2019 21:30
Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50
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Mathematics, 21.06.2019 22:20
In a young single person's monthly budget, $150 is spent on food, $175 is spent on housing, and $175 is spend on other items. suppose you drew a circle graph to represent this information, what percent of the graph represents housing?
Answers: 1
Mathematics, 22.06.2019 05:00
Rachel is baking a cake but does not know if she wants to make a round or a square cake which cake has a larger area a round 8 inch cake or a square 9 inch cake
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A test has a mean grade of 75 with standard deviation of 5. The distribution of test grades is norma...
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