True or false decimals
2 answers:
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The mean and standard deviation of number who find their jobs stressful are 7.44 and 1.6814 respectively.
Given,
number of workers chosen , n=12
percentage of respondents =62%
from given data the calculation are done according to binomial distribution,
then,
probability of respondents ,
a)calculating mean,
b)calculating standard deviation,
Thus, the mean and standard deviation of number who find their jobs stressful are 7.44 and 1.6814 respectively.
To learn more about binomial distribution refer here
#SPJ4
Answer: Part A : c = n.p
Part B = 366 moviegoers
Step-by-step explanation: In part A, to predict the number of moviegoers, we have to find the <u>proportion</u> of the sample that does the activity, which will called <u>p</u>. Since <u>p</u> is a percentage, to determine how many moviegoers are seeing a comedy, you multiply it by the sample size, <u>n</u>.
Therefore: c = n.p
For part B, based on the the sample:
p = = 0.24
The total population is given: 1,525
c = 0.24.1,525
c = 366
Based on the sample, <u>366</u> <u>people</u> are seeing a comedy.