Answer:
Number of families in the sample is 218 families
Step-by-step explanation:
Given:
There are 24 families in the sample that turned on television for 21hours or less.
The 11th percentile of the data is 21hours .
The mean of the data is 36hours.
The standard deviation is 32.2hours.
To calculate number of families in the sample = 24 / 0.11 = 218 families
Answer:
41
Step-by-step explanation:
we can make it easier by taking the same numbers together
2+2+2+2+4+4+4+6+6+5+3+1
8+12+16+5+3+1
41
hope it helps pls mark me as brainliest
Answer:
There is no significant evidence to conclude that the mean weight of laundry detergent is being underfilled or overfilled.
Step-by-step explanation:
The null hypothesis ; H0 : μ = 32
The alternative hypothesis : H1 : μ ≠ 32
The null hypothesis is the initial truth statement, therefore, when the Null hypothesis cannot be rejected, the conclusion goes thus :
There is no significant evidence to conclude that there is difference in the mean weight of laundry detergent. Hence, detergent is neither being underfilled or overfilled.
Answer: (total amount paid - $40) / 0.05
Step-by-step explanation:
Given the following :
Monthly fee = $40
Additional fee = $0.05 per minute on phone
Given the the amount paid for the month is available, number of minutes he was on phone can be determined thus :
Total amount to be paid = monthly fee + additional fee
Additional fee = $0.05 × n
Where n = number of minutes on phone
Hence,
Total amount paid = $40 + $0.05n
If the amount paid is known, the number of minutes on phone can be calculated thus;
(Total amount paid - monthly fee) = $0.05n
n = (Total amount paid - monthly fee) / fee per minute on phone
(total amount paid - $40) / 0.05
Answer:
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Step-by-step explanation:
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