Which is 34,000 in specific notation?

1 answer:

4 0

I think you meant to write "scientific notation" instead of "specific notation"

To write 34000 in scientific notation, you must place the decimal point between the first two digits (3 and 4) to get 3.4

The question is now: "how many spots to the right must we move the decimal to go from 3.4 back to 34000.0?"
The answer to that question is "4 spots to the right"

That '4' is going to be the exponent over the 10 which is why

34000 = 3.4*10^4

The answer is choice D

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You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on con

Assoli18 [71]

Question:

You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on constructing a confidence interval; however, you are not sure how many citizens should be included in the sample. If you want your sample estimate to be within 5 years of the actual mean with a confidence level of 97% , how many citizens should be included in your sample? Assume that the standard deviation of the ages of all the citizens in this community is 18 years.

Answer:

61.03

Step-by-step explanation:

Given:

Standard deviation = 18

Sample estimate = 5

Confidence level = 97%

Required:

Find sample size, n.

First find the Z value. Using zscore table

Z-value at a confidence level of 97% = 2.17

To find the sample size, use the formula below: