Candita uses 1 of an ounce of green paint each time she draws a green line on her painting. She draws a total of 7 green

1 answer:

6 0

(1 + 1 + 1 + 1 + 1 + 1 + 1 ) and ( $\frac{1}{2} + \frac{1}{2} + \frac{1}{2} +\frac{2}{2}$ ) represents the amount of green paint that Candita used drawing green lines on the painting.

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An educational organization in California is interested in estimating the mean number of minutes per day that children between t

Hatshy [7]

Answer:

The critical value for a 98% CI is z=2.33.

The 98% confidence interval for the mean is (187.76, 194.84).

Step-by-step explanation:

We have to develop a 98% confidence interval for the mean number of minutes per day that children between the age of 6 and 18 spend watching television per day.

We know the standard deveiation of the population (σ=21.5 min.).

The sample mean is 191.3 minutes, with a sample size n=200.

The z-value for a 98% CI is z=2.33, from the table of the standard normal distribution.

The margin of error is:

$E=z\cdot \sigma/\sqrt{n}=2.33*21.5/\sqrt{200}=50.095/14.142=3.54$