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3 years ago

What is the unit rate ????

Mathematics

2 answers:

vaieri [72.5K]3 years ago

5 0

It cost 3 dollars for 1 rose

san4es73 [151]3 years ago

4 0

Of course it would be 3 dollars for 1 rose.

Hope this Helped!

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What is the opposite of the opposite of -7.5? Thank you

STALIN [3.7K]

Answer: 7.5

Step-by-step explanation: It's negative, so the opposite would be positive.

7 0

3 years ago

Read 2 more answers

BillieÍs monthly cell phone bill includes the cost of cell phone service, 15% tax on the cost of the cell phone service, and a $

dem82 [27]

X - <span>the cost of cell phone service before tax is added

</span> $x+15\%x+9.25=61
\\x+ 0.15x=61-9.25
\\1.15x=51.75
\\x= \frac{51.75}{1.15}
\\x= 45$ <span>
</span>

6 0

3 years ago

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

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3 years ago

40% of a number is 68.What is the number?

Talja [164]

The number is 17 hope it helps

7 0

3 years ago

What is -10=-14v + 14v

pogonyaev

0=-10
So no value
This is the answer to this question

4 0

4 years ago