Question

1) assume that when adults with smartphones are randomly​ selected, 48​% use them in meetings or classes. If 6 adult smartphone users are randomly​ selected, find the probability that at least 3 of them use their smartphones in meetings or classes the probability is ? 2)

assume that hybridization experiments are conducted with peas having the property that for​ offspring, there is a 0.25 probability that a pea has green pods. Assume that the offspring peas are randomly selected in groups of 30. Complete parts​ (a) through​ (c) below. a. Find the mean and the standard deviation for the numbers of peas with green pods in the groups of 30. The value of the mean is muequals nothing peas. ​(Type an integer or a decimal. Do not​ round.) The value of the standard deviation is sigmaequals nothing peas. ​(Round to one decimal place as​ needed.) b. Use the range rule of thumb to find the values separating results that are significantly low or significantly high. Values of nothing peas or fewer are significantly low. ​(Round to one decimal place as​ needed.) Values of nothing peas or greater are significantly high. ​(Round to one decimal place as​ needed.) c. Is a result of 2 peas with green pods a result that is significantly​ low? Why or why​ not? 3)

Assume that when adults with smartphones are randomly​ selected, 58​% use them in meetings or classes. If 9 adult smartphone users are randomly​ selected, find the probability that at least 5 of them use their smartphones in meetings or classes. The probability is

Answer 1