Suppose x has an exponential distribution with mean equal to 12. determine the following: (a) upper p left-parenthesis x ⁢ greater-than 10 right-parenthesis (round your answer to 3 decimal places.) (b) upper p left-parenthesis x ⁢ greater-than 20 right-parenthesis (round your answer to 3 decimal places.) (c) upper p left-parenthesis x ⁢ less-than 30 right-parenthesis (round your answer to 3 decimal places.) (d) find the value of x such that upper p left-parenthesis upper x ⁢ less-than x right-parenthesis equals 0.95. (round your answer to 2 decimal pl

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

Karen will divide her garden into equal parts. she will plant corn in 8/12 of the garden. what is the lowest number of parts she can divide her garden into?

Christine wong has asked dave and mike to her move into a new apartment on sunday morning. she has asked them both, in case one of them does not show up. from past experience, christine knows that there is a 40% chance that dave will not show up and a 30% chance that mik a. what is the probability that both dave and mike will show up? (round your answer to 2 decimal places.) b. what is the probability that at least one of them will show up? c. what is the probability that neither dave nor mike will show up? (round your answer to 2 decimal places.)e will not show up. dave and mike do not know each other and their decisions can be assumed to be independent.