The lifetime (in hours) of a 60-watt light bulb is a random variable that has a Normal distribution with standard deviation 30. A random sample of 25 bulbs put on test produced a sample mean lifetime of 1038. The 92% confidence interval estimate for the mean lifetime, μ, is (1027.5, 1048.5). If it were desired to cut the confidence interval to half its length while keeping the same 92% level, what size sample would be required to achieve this?

$97520

step-by-step explanation:

add 6% to the value she got from selling the house.

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.

$650 per month plus utilities

step-by-step explanation:

just based on the info you gave, it would seem more cost effective to rent at $650 per month plus utilities.   if utilities are, in fact, $150 per month, your monthly living costs would be $800 as opposed to the other option of $825.

ƒ = 0.03b

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step-by-step explanation: