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yashar806
 2 years ago
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yashar806
 2 years ago
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kropot72
 2 years ago
Best ResponseYou've already chosen the best response.1(a) The mean is \[205\times 0.15=?\] The standard deviation is \[\sqrt{(205\times 0.15\times 0.85)}\]

yashar806
 2 years ago
Best ResponseYou've already chosen the best response.0i got 5.1125 something

yashar806
 2 years ago
Best ResponseYou've already chosen the best response.0I need help with last one

yashar806
 2 years ago
Best ResponseYou've already chosen the best response.0can you help on last one , cuz I really don't get t

kropot72
 2 years ago
Best ResponseYou've already chosen the best response.1(c) This part can be solved by using the Normal Approximation of the Binomial Distribution. As found in part (a) the mean = 31 and the standard deviation = 5.112. There are 27 seats available for left handed people so we need to find the probability that the number of left handed people is equal to, or fewer than 27. In this case the zscore is calculated as follows: \[z=\frac{2731+0.5}{5.112}=0.6847\] Note: The term 0.5 in this calculation is a correction caused by the change from a discrete to a continuous distribution. A standard normal probability table gives a cumulative probability of 0.247

yashar806
 2 years ago
Best ResponseYou've already chosen the best response.0i need to use that for last one

yashar806
 2 years ago
Best ResponseYou've already chosen the best response.0p hat is equal to = x/n

kropot72
 2 years ago
Best ResponseYou've already chosen the best response.1The question you have posted does not involve sampling. Therefore the formula you have posted does not apply.
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