Mathematics, 28.11.2019 00:31 spellsaltoniza
Cacti have been used for medicinal purposes for centuries. in the last 50 years, cacti have also because popular landscape plants. consequently, mature cacti have been dug up in the desert for sale in plant nurseries. researchers interested in the age of a certain medicinal cacti found in the arizona desert. 50 years ago, the average age of this cacti was 171 years. the researchers want to know if the average age of all cacti (of this type) living in an arizonan national forest has decreased. they take a random sample of 64 cacti found in this arizona national forest. below are the charts and plots of their data. set the population standard deviaion = 49. a. are the conditions met to calculate a 95% ci for the mean? b. find a 95% ci for the mean. c. which is the interpretation of the interval you calculated in part (b)? d. is there statistical evidence the average age of cacti has decreased?
Answers: 1
Mathematics, 21.06.2019 19:30
The first floor of marcus’ house is 1,440 square feet. he will cover 1,033 square feet with wood and the rest with tile. a box of tiles will cover 11 square feet. how many boxes of tile does marcus need to buy to cover the floor?
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Mathematics, 21.06.2019 23:30
Choose the correct translation for the following statement. it is at most ten. x< 10 x< 10 x> 10 x> 10
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Mathematics, 21.06.2019 23:30
If you measured the width of a window in inches and then in feet with measurement would you have the greater number of units
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Cacti have been used for medicinal purposes for centuries. in the last 50 years, cacti have also bec...
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