Mathematics, 14.02.2021 09:40 red21120p718de
Assume that when adults with smartphones are randomly selected, 61% use them in meetings or classes .if 30 adult smartphone users are randomly selected, find the probability that exactly 23 of them use their smartphones in meetings or classes
Answers: 2
Mathematics, 21.06.2019 22:20
(b) suppose that consolidated power decides to use a level of significance of ฮฑ = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is xโฏโฏ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume ฯ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)
Answers: 2
Mathematics, 21.06.2019 23:20
1. โ 1 is complementary to โ 2 and โ 3 is complementary to โ 2. subtraction property of equality 2. mโ 1 + mโ 2 = 90 and mโ 3 + mโ 2 = 90 substitution 3. mโ 1 + mโ 2 = mโ 3 + mโ 2 definition of complementary 4. mโ 1 = mโ 3 given
Answers: 3
Mathematics, 21.06.2019 23:30
On the day a coffee shop first opened, it had 140 customers. 65% of the customers ordered a large coffee. how many customers ordered a large coffee? enter your answer in the box.
Answers: 1
Assume that when adults with smartphones are randomly selected, 61% use them in meetings or classes...
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