Mathematics, 24.11.2021 07:40, krisbarnett5353
Data on pull-off force (pounds) for connectors used in an automobile engine application are as follows:
79.4 75.1 78.2 74.1 73.9 75.0 77.6 77.3 73.8 74.6 75.5 74.0 74.7
75.9 72.3 73.8 74.2 78.1 75.4 76.3 75.3 76.2 74.9 78.0 75.1 76.8
(a) Calculate a point estimate of the mean pull-off force of all connectors in the population.
(b) Calculate a point estimate of the pull-off force value that separates the weakest 50% of the connectors in the population from the strongest 50%.
(c) Calculate the point estimate of the population variance.
(d) Calculate the point estimate of the population standard deviation.
(e) Calculate the standard error of the point estimate found in part (a).
(f) Calculate a point estimate of the proportion of all connectors in the population whose pull-off force is less than 73 pounds.
Answers: 2
Mathematics, 21.06.2019 15:00, estefanlionel8678
Which is the correct excel formula for the 80th percentile of a distribution that is n(475, 33)? =norm. dist(80,475,33,1) =norm. inv(0.80,475,33) =norm. s.inv((80-475)/33)?
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Mathematics, 21.06.2019 19:30, lalaokawami0912
Finally, the arena decides to offer advertising space on the jerseys of the arena’s own amateur volley ball team. the arena wants the probability of being shortlisted to be 0.14. what is this as a percentage and a fraction? what is the probability of not being shortlisted? give your answer as a decimal. those shortlisted are entered into a final game of chance. there are six balls in a bag (2 blue balls, 2 green balls and 2 golden balls). to win, a company needs to take out two golden balls. the first ball is not replaced. what is the probability of any company winning advertising space on their volley ball team jerseys?
Answers: 3
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