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3 years ago

Brian is choosing an appetizer, an entrée, and a drink. If he

Mathematics

2 answers:

Jet001 [13]3 years ago

7 0

Answer:

Total number of possible outcomes = 27

Number of favorable outcomes = 1

Probability = 1/27

Step-by-step explanation:

galben [10]3 years ago

5 0

Answer:

The first question is right :) :) :)

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The authors of a paper presented a correlation analysis to investigate the relationship between maximal lactate level x and musc

ArbitrLikvidat [17]

Answer:

a) Sample correlation coefficient, r = 0.7411

bi) test statistic, t = 4.102

bii) P-value = 0.000736

Step-by-step explanation:

a) The formula for the sample correlation coefficient is given by the formula:

$r = \frac{S_{xy} }{\sqrt{S_{xx} S_{yy} }} }$

$S_{xx} = 2,648,130.357\\S_{yy} = 36.7376,\\S_{xy} = 7408.225$

$r = \frac{7408.225}{\sqrt{2648130.357*36.7376} }$

r = 0.7511

i) formula for the test statistic is given by the formula:

$t = \frac{r\sqrt{n-1} }{\sqrt{1 - r^{2} } }$

sample size, n = 4

$t = \frac{0.7511\sqrt{14-1} }{\sqrt{1 - 0.7511^{2} } }$

t = 4.102

ii) Degree of freedom, df = n -2

df = 14 -2

df = 12

The P-value is calculate from the degree of freedom and the test statistic using excel

P-value =(=TDIST(t,df,tail))

P-value = (=TDIST(4.1,12,1)

P-value = 0.000736

4 0

2 years ago

One fourth of the 120 students took wood shop. How many students did not take wood shop?

yawa3891 [41]

Answer:

90 students.

Step-by-step explanation:

Given 1/4 of the 120 students took woodshop, just take the 3/4 that didn't take it:

$\frac{3}{4}(120)$

Find common factors between 4 and 120 to simplify, so 4.

$\frac{3}{1} (30)$

Now multiple across to get 90.

5 0

3 years ago

(2 + 5i)(2 + i) <br><br> please help me to understand how to do it

Tpy6a [65]

8 0

3 years ago

Can anyone help me?.

4vir4ik [10]

The third one is the correct answer

7 0

2 years ago

What the answer for B?

LenKa [72]

The answer is 49.89
hope this helped:)

8 0

3 years ago

Read 2 more answers