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mojhsa [17]
2 years ago
7

Rewrite each number sentence using numerals and symbols. Add 7 and 6 and then add 9

Mathematics
2 answers:
lbvjy [14]2 years ago
7 0
(7+6) + 9. That is the correct answer
JulsSmile [24]2 years ago
5 0

Answer:

(7+6)+9 there you go my good sir/ma'am

You might be interested in
2 +
Paraphin [41]

Answer:

go study yourself

Step-by-step explanation:

4 0
3 years ago
What would happen to the width of the confidence interval if Gina changed it to a 99% confidence interval?
luda_lava [24]

Answer:

The confidence interval becomes wider.

Step-by-step explanation:

The general form of a confidence interval is:

Sample\ statistic\pm Critical\ value\times \frac{Standard\ deviation}{\sqrt{Sample\ size} }

The critical value is based on the confidence level.

The confidence level is the probability that the true parameter value falls within a specific interval. The basic and most used confidence levels are 90%, 95% and 99%.

The confidence interval is directly proportional to the confidence interval.

Confidence Interval ∝ Confidence Level

On increasing the confidence level the confidence level widens. And on decreasing the confidence level the confidence level gets narrower.

Thus, when Gina changes the confidence interval to 99% the confidence interval becomes wider.

6 0
3 years ago
9 times 4 = 4 times (finish the equation)
marshall27 [118]

9 times 4 = 4 times (9)  because it equals to itself.

9 time 4 is 36

4 times 9 is 36

7 0
3 years ago
One fourth of a number plus 3 gives 4. The number is:
Triss [41]
The number would be 4
5 0
3 years ago
Read 2 more answers
Construct a 95% confidence interval for the population mean, µ. Assume the population has a normal distribution. A sample of 25
bixtya [17]

Answer:C. (77.29, 85.71)

Step-by-step explanation:

We want to determine a 95% confidence interval for the mean test score of randomly selected students.

Number of sample, n = 25

Mean, u = 81.5

Standard deviation, s = 10.2

For a confidence level of 95%, the corresponding z value is 1.96. This is determined from the normal distribution table.

We will apply the formula

Confidence interval

= mean +/- z ×standard deviation/√n

It becomes

81.5 +/- 1.96 × 10.2/√25

= 81.5 +/- 1.96 × 2.04

= 81.5 +/- 3.9984

The lower end of the confidence interval is 81.5 - 3.9984 =77.5016

The upper end of the confidence interval is 81.5 + 3.9984 =85.4984

Therefore, the correct option is

C. (77.29, 85.71)

6 0
3 years ago
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