Answer: (0.760, 0.820)
Step-by-step explanation:
Let p be the population proportion of all adults feel that "education and our schools" is one of the top issues facing California.
Given : 79% (actual results are 400 out of 506 surveyed) of California adults feel that "education and our schools" is one of the top issues facing California.
i.e.Sample size : n= 506
Sample proportion : 
Critical value for 90% confidence interval ( Using z-value table) :

Now, the 90% confidence interval for the population proportion will be :

i.e. 
i.e. 

Hence, the 90% confidence interval for the population proportion= (0.760, 0.820)
Answer: There are 2/3 cups of peanuts and 21/4 cups of trail mix if you are to subtract the two witch gives you 4.58333333333 then simplify that as a fraction u should get 41/2 then simplify that u should get 20 or 1/2
Step-by-step explanation:
The number of cups of milk would be 2 2/3 needed in the four milkshakes.
<h3>What is Ratio?</h3>
A ratio is defined as a relationship between two quantities, it is expressed as one divided by the other
We have been given that martin is making four milkshakes. The recipe calls for 2/3 cup of milk.
We have to determine the number of cups of milk he needs
Let the number of cups of milk would be x in the four milkshakes.
As per the given situation, we can write the ratio would be as:
1 milkshakes : 2/3 cup of milk = 4 milkshakes : x cup of milk
⇒ 1 / (2/3) = 4/x
Reciprocal the term in the numerator,
⇒ 3/2 = 4/x
Apply the cross-multiplication operation,
⇒ 3x = 8
⇒ x = 8/3
⇒ x = 2 2/3
Thus, the number of cups of milk would be 2 2/3 in the four milkshakes.
Learn more about the Ratio here:
brainly.com/question/1504221
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Answer:
Standard deviation of the sample = 17.421
Step-by-step explanation:
We are given that in a random sample of 80 teenagers, the average number of texts handled in one day is 50.
Also, the 96% confidence interval for the mean number of texts handled by teens daily is given as 46 to 54.
So, sample mean,
= 50 and Sample size, n = 80
Let sample standard deviation be s.
96% confidence interval for the mean number of texts,
is given by ;
96% confidence interval for
=
[46 , 54] =
Since lower bound of confidence interval = 46
So, 46 =
50 - 46 =
s =
= 17.421
Therefore, standard deviation of the sample is 17.421 .
Answer:
x = 5
Step-by-step explanation:
150+25x= 55x
-25x -25x
150= 30x
150/30 = 30x/30
x = 5
Hope this helps!