Mathematics, 08.11.2019 01:31, Bekks
It is known that 65% of all brand a external hard drives work in a satisfactory manner throughout the warranty period (are "successes"). suppose that n = 15 drives are randomly selected. let x = the number of successes in the sample. the statistic x/n is the sample proportion (fraction) of successes. obtain the sampling distribution of this statistic. [hint: one possible value x/n is 0.2, corresponding to x = 3. what is the probability of this value (what kind of random variable is x)? ] (round your answers to three decimal places.)
Answers: 2
Mathematics, 21.06.2019 14:30, chintiffany4779
Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.
Answers: 3
Mathematics, 21.06.2019 16:30, leenzazou98241
The average human heart beats 1.15 \cdot 10^51.15โ
10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65โ
10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year. how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.
Answers: 1
Mathematics, 21.06.2019 21:00, mccdp55
Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]
Answers: 1
Mathematics, 21.06.2019 21:00, jennybee12331
Louis wants to carpet the rectangular floor of his basement the basement has an area of 864 square feet the width of the basement is 2/3 its length what is the length of lewis's basement
Answers: 2
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