What is 98.155 rounded to the nearest tenth

2 answers:

8 0

If you want to round 98.155 to the nearest tenth, it is 98.2.
The 1 is in the tenths place.
If the number to the right of it is 5 or more, round up.
If the number to the right of it is 4 or less, round down.
In this case, you round the digit in the tenths place up because the digit in the <em>hundredths</em> place is 5+.

lozanna [386]3 years ago

8 0

The tenth is the first decimal place. When rounding you check if the number before is greater than 5, if it is you add 1 to the previous number, else you leave it as it is.

98.155 = 98.2(Rounded)

Hope this helps! :)

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Big babies: The National Health Statistics Reports described a study in which a sample of 354 one-year-old baby boys were weighe

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Answer:

Yes. The data provide enough evidence to support the claim that the mean weight of one-year-old boys is greater than 25 pounds.

P-value=P(t>2.84)=0.0024

Step-by-step explanation:

Hypothesis test on the population mean.

The claim is that the mean weight of one-year-old boys is greater than 25 pounds.

Then, the null and alternative hypothesis are:

$H_0: \mu=25\\\\H_a:\mu>25$

The significance level is α=0.05.

The sample size is n=354. The sample mean is 25.8 pounds and the sample standard deviation is 5.3 pounds. As the population standard deviation is estimated from the sample standard deviation, we will use a t-statistic.

The degrees of freedom are:

$df=n-1=354-1=353$