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2 years ago

How do I round 8.54 to the nearest hundredth?

2 answers:

5 0

You would look at the number in the hundredth's place which is 4. Then look to the right of that number. Because there is none, then add a zero. The zero would keep the 4 as a 4, therefore 8.54 rounded to the nearest hundredth is 8.54

Maru [420]2 years ago

4 0

It is just like rounding numbers.8.54 is closer to 9 than to 8 because there is lest distance it has to travel on the number line

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3 years ago

Read 2 more answers

Consider the following hypothesis test:H0: 20Ha: < 20A sample of 60 provided a sample mean of 19.6. The population standard d

elixir [45]

Answer:

a: z = -1.936

b: 0.0265

d: z < -1.645

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Step-by-step explanation:

We are given:

H0: µ = 20

HA: µ < 20

n = 60, sample mean: 19.6, σ = 1.6

Since the alternate hypothesis has a < sign in it, it is a left tailed test. The < or > sign in the alternate hypothesis points towards the rejection region.

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For b: we need to use the z-score table to look up the p-value for the score we calculate in part a. The p-value is 0.0265. This means that there is only about a 2.65% chance that the sample values were a result of random chance.

For d: Since the significance level is 0.05, and this is a one tailed test, we have a critical value of z < - 1.645. This means that if the z-score we calculate in part a is less than -1.645, we will reject the null hypothesis

See attached photo for all the calculations!

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