How do you do this? algebra II
1 answer:
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Answer: 151
Step-by-step explanation:
When the prior estimate of population proportion is available , then the formula for sample size:
, where p= prior estimate of population proportion
z*= critical-value.
E= Margin of error.
Let p be the proportion of of girls "wait for their missionary".
p = 11% =0.11
E= ± 0.03
The critical z-value corresponding to 90% confidence level = z*=1.645 [using z-table ]
Substitute all the values in the above formula , we get
Required sample size :
[Rounded to next integer.]
Thus, the number of observations he needs in his sample = 151
Answer:
<u>6 cups</u> of whole milk is used for every teaspoon of salt.
Step-by-step explanation:
Given:
A recipe for ricotta cheese calls for 3/4 cup of whole milk for every 1/8 teaspoon of salt.
Now, to find the cup of whole milk should be used for every teaspoon of salt.
So, to get the cup of whole milk used we use unitary method:
For every 1/8 teaspoon of salt cup of whole milk used = 3/4 cup.
Thus for every teaspoon of salt cup of whole milk used = 3/4 ÷ 1/8.
(changing the division to multiplication the fraction reciprocals.)
Therefore, 6 cups of whole milk is used for every teaspoon of salt.