Answer:
The 99% confidence interval would be given by (0.286;0.562)
Step-by-step explanation:
Information given:
represent the families owned at least one DVD player
represent the total number of families
represent the estimated proportion of families owned at least one DVD player
In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 99% of confidence, our significance level would be given by
and
. And the critical value would be given by:
The confidence interval for the mean is given by the following formula:
If we replace the values obtained we got:
The 99% confidence interval would be given by (0.286;0.562)
Answer:
52 R17
Step-by-step explanation:
52 * 36 = 1872
1889 - 1872 = 17
--> 52 R17
Answer:
0.16875
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
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Answer:
416.5 cent Pepper jackie spend on jelly beans .
Step-by-step explanation:
As given
Pepper jackie purchased 3.5 pounds of jelly beans for $1.19 per pound.
Thus
$1.19 = 1 pound
Cost of 3.5 pounds of jelly beans = 1.19 × 3.5
= $4.165
Therefore the cost of 3.5 pounds of jelly beans is $4.165 .
As 1 dollar = 100 cent
$4.165 = 4.165 × 100
= 416.5 cent
Therefore 416.5 cent Pepper jackie spend on jelly beans .