Arecent article in a college newspaper stated that college students get an average of 5.5 hrs of sleep each night. a student who was skeptical about this value decided to conduct a survey by randomly sampling 25 students. on average, the sampled students slept 6.25 hours per night. identify which value represents the sample mean and which value represents the claimed population mean.

Population mean =

Sample mean =

Step-by-step explanation:

We know that the population mean is the average of the entire population.

The sample mean is the mean of the sample which is derived from the whole population randomly.

Given : A recent article in a college newspaper stated that college students get an average of 5.5 hrs of sleep each night.

Thus , the population mean = 5.5 hrs

Also, On average, the sampled students slept 6.25 hours per night.

It implies , the sample mean =  6.25 hours

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step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)