All categories

3 years ago

What's 15 rounded to the nearest whole number

Mathematics

2 answers:

nadezda [96]3 years ago

8 0

Answer:

Step-by-step explanation:

15 itself is a whole number

hence 15 rounded to the nearest whole number is still 15.

yawa3891 [41]3 years ago

4 0

The next larger whole number is 16.

The next smaller whole number is 14.

Nether of those is any closer to 15 than 15 already is.

So the whole number nearest to 15 is 15 itself.

You might be interested in

Find the surface are of a rectangular prism. Length:10in Width:5 1/2in Height:6 1/4

Ivahew [28]

The answer to this problem is 318.75

6 0

3 years ago

Read 2 more answers

A sample of 16 cookies is taken to test the claim that each cookie contains at least 9 chocolate chips. The average number of ch

alexandr1967 [171]

Answer:

(a) The value of z test statistics is -2.25.

(b) At 0.05 significance level the z table gives critical value of -1.645 for left-tailed test.

(c) The p-value for this test statistic is 0.0122.

(d) We conclude that the average number of chocolate chips in all the cookies is less than 9.

Step-by-step explanation:

We are given that a sample of 16 cookies is taken to test the claim that each cookie contains at least 9 chocolate chips.

The average number of chocolate chips per cookie in the sample was 7.875. The standard deviation of the population is 2.

Let $\mu$ = the average number of chocolate chips in all the cookies.

So, Null Hypothesis, $H_0$ : $\mu \geq$ 9 {means that the average number of chocolate chips in all the cookies is at least 9}

Alternate Hypothesis, $H_A$ : $\mu$ < 9 {means that the average number of chocolate chips in all the cookies is less than 9}

The test statistics that would be used here One-sample z test statistics as we know about the population standard deviation;

T.S. = $\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }$ ~ N(0,1)

where, $\bar X$ = sample mean number of chocolate chips per cookie = 7.875

$\sigma$ = population standard deviation = 2

n = sample of cookies taken = 16

So, the test statistics = $\frac{7.875-9}{\frac{2}{\sqrt{16} } }$

= -2.25

(a) The value of z test statistics is -2.25.

(b) Now, at 0.05 significance level the z table gives critical value of -1.645 for left-tailed test.

Since our test statistic is less than the critical value of z as -2.25 < -1.645, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which we reject our null hypothesis.

(c) The P-value of the test statistics is given by;

P-value = P(Z < -2.25) = 1 - P(Z $\leq$ 2.25)

= 1 - 0.9878 = 0.0122

(d) Therefore, we conclude that the average number of chocolate chips in all the cookies is less than 9.

8 0

3 years ago

Sergio's internet provider charges its customers $9 per month plus 4¢ per minute of on-line usage. Sergio received a bill from t

vekshin1

9 + 0.04m = 81.40
0.04m = 81.40 - 9
0.04m = 72.40
m = 72.40 / 0.04
m = 1810 minutes <==

4 0

3 years ago

What is an equation of the tangent line at x = 4, assuming that f(4) = 3 and f '(4) = 2? (enter your answer as an equation using

Margaret [11]

The general equation for a line in the case where the slope and one point on the line are known is y-b = m(x-a), where m is the slope and (a,b) is the point.

Here f(4) = 3 corresponds to the point (4,3), and f '(4) = 2 corresponds to the slope of the tangent line at that point.

Thus the equation of the tangent line here is

y - 3 = 2(x - 4).

An alternative form of this equation would be y = 3 + 2x - 8, or

y = 2x - 5

3 0

3 years ago

Round 6 6/7 to the nearest whole number.

natali 33 [55]

Whole number = 1, 2, 3, 4, 5, 6, 7, 8, ...

6 $\frac{6}{7}$ = 6.86 ≈ 7

5 0

3 years ago

Read 2 more answers