A recipe for 4 dozen cookies calls for 3/4 cup of sugar. How much sugar is needed to make 2 dozen cookies?
2 answers:
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Answer:
The 95% confidence interval for the population mean amount spent on groceries by Connecticut families is ($73.20, $280.21).
Step-by-step explanation:
The data for the amount of money spent weekly on groceries is as follows:
S = {210, 23, 350, 112, 27, 175, 275, 50, 95, 450}
<em>n</em> = 10
Compute the sample mean and sample standard deviation:
It is assumed that the data come from a normal distribution.
Since the population standard deviation is not known, use a <em>t</em> confidence interval.
The critical value of <em>t</em> for 95% confidence level and degrees of freedom = n - 1 = 10 - 1 = 9 is:
*Use a <em>t</em>-table.
Compute the 95% confidence interval for the population mean amount spent on groceries by Connecticut families as follows:
Thus, the 95% confidence interval for the population mean amount spent on groceries by Connecticut families is ($73.20, $280.21).
Answer:
10560 square feet
Step-by-step explanation:
If 2 sides are 48 feet, then we are left with
feet for the remaining side pieces.
feet.
So our dimensions must be 48 x 62.
This gives us an area of
Answer:
- 4
Step-by-step explanation:
Using the rule of radicals
×
⇔
Simplify using this rule
=
= ×
= 3
Then
- 2 + 2
= - 2(3 ) + 2
= - 6 + 2
= - 4