Mathematics, 19.11.2019 00:31 neariah24
Time spent using e-mail per session is normally distributed, with mu equals μ=13 minutes and sigma equals σ=2 minutes. complete parts (a) through (d). a. if you select a random sample of 50sessions, what is the probability that the sample mean is between 12.8 and 13.2 minutes? b. if you select a random sample of 50sessions, what is the probability that the sample mean is between 12.5 and 13 minutes? c. if you select a random sample of 100sessions, what is the probability that the sample mean is between 12.8 and 13.2 minutes? d. explain the difference in the results of (a) and (c). choose the correct answer below. the sample size in (c) is greater than the sample size in (a), so the standard error of the mean (or the standard deviation of the samplingdistribution) in (c) is ▼ less greater than in (a). as the standard deviation ▼ increases decreases , values become ▼ less more concentrated around the mean. therefore, the probability of a region that includes the mean will always ▼ decrease increase when the sample size increases.
Answers: 2
Mathematics, 21.06.2019 14:30
Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition
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Mathematics, 21.06.2019 15:30
Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.
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Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths
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Time spent using e-mail per session is normally distributed, with mu equals μ=13 minutes and sigma e...
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