Alan has $25 to spend he spent $12.89 including tax to buy a new DVD he needs to save $5 but he wants to buy a snack if candy ba
rs cost $0.75 per bar what is the maximum number of candy bars that I can buy
1 answer:
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Answer:
a) The estimated standard deviation of the sampling distribution of the proportion is 0.023
b) the estimated standard deviation have been if he had surveyed only 100 customers is 0.046
Step-by-step explanation:
given information:
the number of sample, n = 400
sample proportion, p = 70% = 0.7
a) standard deviation of a sample proportion is
σ =
=
= 0.023
b) if n = 100, so
σ =
=
= 0.046
Answer:
Step-by-step explanation:
<u>Given fraction</u>:
Rewrite 9 as 3 · 3:
Cancel the common factor y in the first fraction and the common factor 3 in the second fraction: