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natta225 [31]
3 years ago
10

Help! I’ll reward brainest its pretty easy

Mathematics
1 answer:
DochEvi [55]3 years ago
8 0

Answer:

\frac{3}{10} are wearing blue shirts

Step-by-step explanation:

purple = \frac{2}{5} = \frac{4}{10}

gold = \frac{3}{10}

\frac{4}{10} + \frac{3}{10} = \frac{7}{10}

1 - \frac{7}{10} = \frac{3}{10}

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The following table gives results from two groups of students who took a nonproctored test. Use a 0.01 significance level to tes
Nana76 [90]

Answer:

Original claim is \mu_{1} =\mu_{2}

Opposite claim is \mu_{1} \neq \mu_{2}

Null and alternative hypotheses:

H_{0}:\mu_{1} = \mu_{2}

H_{1} : \mu_{1} \neq \mu_{2}

Significance level: 0.01

Test statistic:

We can use TI-84 calculator to find the test statistic and P-value. The steps are as follows:

Press STAT and the scroll right to TESTS

Scroll down to 2-SampTTest... and scroll to stats.

Enter below information.

\bar{x_{1}}=70.29

Sx1=22.09

n_{1} = 30

\bar{x_{2}}=74.26

Sx2=18.15

n_{2} = 32

\mu_{1} \neq \mu_{2}

Pooled: Yes

Calculate.

The output is in the attachment.

Therefore, the test statistic is:

t=-0.78

P-value: 0.4412

Reject or fail to reject: Fail to reject

Final Conclusion: Since the p-value is greater than the significance level, we, therefore, fail to reject the null hypothesis and conclude that the there is sufficient evidence to support the claim that the samples are from populations with the same mean.

6 0
2 years ago
What is 5 3/4 times 2/6? I am doing math homework and need help
Jobisdone [24]
53/4•2/6=1 11/12
Because you must turn 5 3/4 into an improper fraction. So 23/4•2/6. Next you are able to cross reduce because 2 goes into 2 and four so now you have 23/2•1/6 now just multiply across. 2•6=12 and 23•1=23 so now you have 23/12 which equals
1 11/12
6 0
3 years ago
Read 2 more answers
Madison needs to buy enough meat to make 1,000 hamburgers for the company picnic. Each hamburger will weigh 0.25 pound. How many
Lelechka [254]

Answer:

Madison needs to buy 250 pound of meat

Step-by-step explanation:

6 0
2 years ago
1.) Which function in vertex form is equivalent to f(x) = x2 + x +1?
Gwar [14]
Hello,

Answer C

x²+x+1=(x²+2*1/2*x+1/4)+1-1/4=(x+1/2)²+3/4


5 0
3 years ago
The equation r = 6t gives the number of albums released, r, by a record label over time in years, t. If you graph this relations
GalinKa [24]
R = 6t.....subbing in (8,48).....t = 8 and r = 48
48 = 6(8)
48 = 48 (correct)

r = 6t...subbing in (13,78)...t = 13 and r = 78
78 = 6(13)
78 = 78 (correct)

so u have 2 sets of points on this line and they are (8,48) and (13,78)
5 0
3 years ago
Read 2 more answers
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