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?
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Mathematics, 21.06.2019 20:30
Venita is sewing new curtains. the table below shows the relationship between the number of stitches in a row and the length ofthe row.sewingnumber of stitches length (cm)51 131532024306what is the relationship between the number of stitches and the length? othe number of stitches istimes the length.o. the number of stitches is 3 times the length.
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Taylor wants to paint his rectangular deck that is 41 feet long and 24 feet wide. a gallon of paint covers about 350 square feet. how many gallons of paint will taylor need to cover the entire deck? round your answers to two decimal places when necessary.
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Mathematics, 21.06.2019 22:30
What is the distance between a and b? round your answer to the nearest tenth. a coordinate plane is shown. point a is located at negative 1, 5, and point b is located at 4, 1. a line segment connects the two points.
Answers: 1
Cacti have been used for medicinal purposes for centuries. in the last 50 years, cacti have also bec...
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