Mathematics, 22.06.2019 20:30, ovowendygirl7595
Arandom sample of size n1 = 10 is selected from a normal population with a mean of 120 and a standard deviation of 12. a second random sample of size n2 = 15 is selected from a normal population with a mean of 105 and a standard deviation of 20. let m1 and m2 be the two sample means. the two populations are thought to be independent. let x = m1 – m2 find: (d) the expected value and the variance of x. (e) the probability that x exceeds 10. (f) the probability that x is between 12.5 and 17.5.
Answers: 1
Mathematics, 21.06.2019 15:30, jakobrobinette
In δabc, if the length of side b is 3 centimeters and the measures of ∠b and ∠c are 45° and 60°, respectively, what is the length of side c to two decimal places?
Answers: 1
Mathematics, 21.06.2019 16:30, joThompson
You are cycling around europe with friends. you book into a hostel and you ask the owner what the ratio of men to women is currently staying there. there are 24 men and 6 women. what is the ratio of men to women in its simplest form?
Answers: 2
Mathematics, 21.06.2019 18:00, evarod
The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at link to the chart is here
Answers: 1
Arandom sample of size n1 = 10 is selected from a normal population with a mean of 120 and a standar...
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