Executives of a supermarket chain are interested in the amount of time that customers spend in the stores during shopping trips. the executives hire a statistical consultant and ask her to determine the mean shopping time, u , of customers at the supermarkets. the consultant will collect a random sample of shopping times at the supermarkets and use the mean of these shopping times to estimate .u. assuming that the standard deviation of the population of shopping times at the supermarkets is 26 minutes, what is the minimum sample size she must collect in order for her to be95% confident that her estimate is within 3 minutes of. u?
carry your intermediate computations to at least three decimal places.
write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements).
right option is : b. 12, √ 25 , –7, 14⁄7, 9
we have given,
set of elements : 12, –3⁄4,√ 25 , –7, √ 5 , 14⁄7, 9
an integer number is whole number with positive and negative values but no fractional numbers.
from the given set of numbers:
12 , √ 25 = 5 , =2 , -7 and 9 are integers.
and √5 are non integers.
hence, right option is : b. 12, √ 25 , –7, 14⁄7, 9
bc its parallel both equation have the same slope so you'd only have to find the y-intercept
i don't know the options but all you have to do is:
1 - first we sum our expression:
84 + 16 = 100
2 - secondly, we calculate our options and find the one that equals 100.
hope it ,