Ask question

Ask question

All categories

3 years ago

12

A school had 498 students sign up for the trivia teams. If they wanted to have 26 teams with the same number of students on each

team, how many more students need to sign up?

1 answer:

Mariana [72]3 years ago

7 0

Answer:

Step-by-step explanation:

498/26 = 19 with a remainder of 3

so each group will have nineteen students but you need 22 more to make all groups have 20 students

498 + 22 = 520

520/26= 20

You might be interested in

Assume a simple random sample of 10 BMIs with a standard deviation of 1.186 is selected from a normally distributed population o

kirza4 [7]

Answer:

a) H0: $\sigma = 1.34$

H1: $\sigma \neq 1.34$

b) $df = n-1= 10-1=9$

And the critical values with $\alpha/2=0.005$ on each tail are:

$\chi_{\alpha/2}= 1.735, \chi_{1-\alpha/2}= 23.589$

c) $t=(10-1) [\frac{1.186}{1.34}]^2 =7.05$

d) For this case since the critical value is not higher or lower than the critical values we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true deviation is not significantly different from 1.34

Step-by-step explanation:

Information provided

n = 10 sample size

s= 1.186 the sample deviation

$\sigma_o =1.34$ the value that we want to test

$p_v$ represent the p value for the test

t represent the statistic (chi square test)

$\alpha=0.01$ significance level

Part a

On this case we want to test if the true deviation is 1,34 or no, so the system of hypothesis are:

H0: $\sigma = 1.34$

H1: $\sigma \neq 1.34$

The statistic is given by:

$t=(n-1) [\frac{s}{\sigma_o}]^2$

Part b

The degrees of freedom are given by:

$df = n-1= 10-1=9$

And the critical values with $\alpha/2=0.005$ on each tail are:

$\chi_{\alpha/2}= 1.735, \chi_{1-\alpha/2}= 23.589$

Part c

Replacing the info we got:

$t=(10-1) [\frac{1.186}{1.34}]^2 =7.05$

Part d

For this case since the critical value is not higher or lower than the critical values we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true deviation is not significantly different from 1.34

5 0

3 years ago

Segment HI has a length of 25.3 inches. It can be mapped to segment GO by a reflection over the x-axis followed by a reflection

OLEGan [10]

25.3, reflections do not change the length of something and if it can be mapped on to it they should be the same

5 0

3 years ago

Read 2 more answers

Can someone help me with this one ??

s344n2d4d5 [400]

Answer:

Measure angle B = 65 degrees AB = 34 AC = 30

Step-by-step explanation:

Triangle Sum Theorem: 180 - 90 - 25 = 90 + 25 + 65 = 180

Tangent 25 = 16/x

AB = 34

Pythagorean Theorem Equation:

$b =[]\sqrt{34^{2} - 16^{2}}= \sqrt{900}= 30$

AC = 30

6 0

3 years ago

i need help!!! write an equation in point-slope form of the line through point j(4, –4) with slope 4. a. y 4=4(x 4) b. y 4=4(x-4

Sergeeva-Olga [200]

Required equation is y - y1 = m(x - x1); where m = 4 and (x1, y1) = (4, -4)
y - (-4) = 4(x - 4)
y + 4 = 4(x - 4)

7 0

3 years ago

Read 2 more answers

Damien purchased $43.11 worth of

balu736 [363]

Answer:

1.8 pounds

Step-by-step explanation:

Take the total price and divide by the price per pound to determine the number of pounds

43.11/23.95 =1.8

4 0

3 years ago

Read 2 more answers