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3 years ago

I need help on this problem can ya'll help out?? r + 45 < 16

Mathematics

1 answer:

bezimeni [28]3 years ago

7 0

:) I hope this helps! If you have any more questions let me know!

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The amount of money spent weekly on cleaning, maintenance, and repairs at a large restaurant was observed over a long period of

Kazeer [188]

Z = ( X - Mean ) / SD
z = ( 646 - 597 ) / 39
z = 49/39 = 1.25
With the z-score table:
for z = 1.25, p = 0.8944 ( probability that the cost will be lower than $646 )
1 - 0.8944 = 0.1056
Answer: <span>The probabilit</span>y is 0.1056

7 0

3 years ago

You have two recipes that together use a pound of butter. One recipe takes a 1/4 pound more than the other one. How much butter

ELEN [110]

Answer:

First recipe needs = 3/8

Second recipe needs = 5/8

Step-by-step explanation:

Given:

Two recipes needs butter = 1 pound

One recipe needs 1/4 pound more

Find:

Each recipe needs butter

Computation:

Assume;

First recipe needs = x

Second recipe needs = x + (1/4)

Two recipes needs butter = First recipe needs + Second recipe needs

x + x + (1/4) = 1

2 x = 1 - (1/4)

2 x = 3/4

x = 3/8 pound

First recipe needs = 3/8

Second recipe needs = x + (1/4) = (3/8) + (1/4) = 5/8

Second recipe needs = 5/8

3 0

3 years ago

A school authority claims that the average height of students is 178 cm. A researcher has taken a well-designed survey and his s

Hunter-Best [27]

Answer:

d) The difference exists due to chance since the test statistic is small

Step-by-step explanation:

From the given information:

Population mean = 178 cm

the sample mean = 177.5 cm

the standard deviation = 2

the sample size = 25

The null hypothesis and the alternative hypothesis can be computed as:

Null hypothesis:

$H_o: \mu = 178$

Alternative hypothesis:

$H_1: \mu \neq 178$

The t-test statistics is determined by using the formula:

$t = \dfrac{X - \mu}{\dfrac{\sigma}{\sqrt{n}}}$

$t = \dfrac{177.5 - 178}{\dfrac{2}{\sqrt{25}}}$

$t = \dfrac{-0.5}{\dfrac{2}{5}}}$

$\mathbf{t= -1.25}$

Degree of freedom df = n- 1

Degree of freedom df = 25 - 1

Degree of freedom df = 24

At the level of significance ∝ = 0.05, the critical value = 2.064

Decision rule: To reject the null hypothesis if the test statistics is greater than the critical value at 0.05 level of significance

Conclusion: We fail to reject the null hypothesis since the test statistics is lesser than the critical value and we conclude that the difference exists due to chance since the test statistic is small

5 0

3 years ago

PLEASE HELP MEEEEEEEEEEEEEEEEE

brilliants [131]

Answer:

A. .25

B. .95

C. .75

D. .42

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Slope-intercept form graph and solve the system of equations <br> y=2x+8 <br> -x+y=6

omeli [17]

Answer:

y=mx+b

y=2x+8

y=x+6

Step-by-step explanation:

y=2x+8 y=x+6

slope:2 slope:1

y-int:8 y-int:6

x. y x. y

0. 8 0. 6

1. 10 1. 7

3 0

3 years ago