zombiechick180
10.12.2019 •
Mathematics
An iq test is designed so that the mean is 100 and the standard deviation is 21 for the population of normal adults. find the sample size necessary to estimate the mean iq score of statistics students such that it can be said with 99% confidence that the sample mean is within 6 iq points of the true mean. assume that sigma equals 21 and determine the required sample size using technology. then determine if this is a reasonable sample size for a real world calculation.
the required sample size is ?
would it be reasonable to sample this number of students?
yes. this number of iq test scores is a fairly small number.
yes. this number of iq test scores is a fairly large number.
no. this number of iq test scores is a fairly large number.
no. this number of iq test scores is a fairly small number.
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Ответ:
Draw one whole fraction bar. Next, draw 6 equal bars under it, since you are dividing by sixths. Then draw a twelfths fraction bar with 2 twelfths for each sixth bar. Above the twelfths bar, circle groups of 4 sixths. There is one group of 4/6 with 1/6 remaining. Since 1/6 is 1/4 of 4/6, the quotient is 1 1/4.
Step-by-step explanation: