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3 years ago

I need help ASAP! Is it A,b,c, or d?

Mathematics

1 answer:

kotykmax [81]3 years ago

4 0

Answer:

i would go for the first one but im not entirely sure

i suggest you wait to see other people's answers

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A square wall tile has an area of 58,000 square millimeters. Between which two measurements is the length of one side

scoray [572]

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3 years ago

What is the quotient of the expression: 12/-3

4vir4ik [10]

Answer:

-4

Step-by-step explanation:

trust me im smart

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3 years ago

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Please Help Will Mark Brainly.

Free_Kalibri [48]

Answer:

The Answer is 39

Step-by-step explanation:39•7=273

289-273=16

I was First BTW

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3 years ago

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Find the area of the rectangle. Show your work!

Nesterboy [21]

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use FOILING

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2 years ago

Consider the following hypothesis test.H0:μ1−μ2=0 Ha:μ1−μ2≠0The following results are for two independent samples taken from the

Julli [10]

Answer:

a) $z =\frac{104-106}{\sqrt{\frac{8.4^2}{80} +\frac{7.6^2}{70}}}= -1.53$

b) $p_v =2*P(z$

c) Since the p value is higher than the significance level provided we have enogh evidence to FAIL to reject the null hypothesis and we can't conclude that the true means are different at 5% of significance

Step-by-step explanation:

Information given

$\bar X_{1}= 104$ represent the mean for 1

$\bar X_{2}= 106$ represent the mean for 2

$\sigma_{1}= 8.4$ represent the population standard deviation for 1

$\sigma_{2}= 7.6$ represent the population standard deviation for 2

$n_{1}=80$ sample size for the group 1

$n_{2}=70$ sample size for the group 2

z would represent the statistic

Hypothesis to test

We want to check if the two means for this case are equal or not, the system of hypothesis would be:

H0: $\mu_{1}=\mu_{2}$

H1: $\mu_{1} \neq \mu_{2}$

The statistic would be given by:

$z =\frac{\bar X_1-\bar X_2}{\sqrt{\frac{\sigma^2_1^2}{n_1} +\frac{\sigma^2_2^2}{n_2}}}=$ (1)

Part a

Replacing we got:

$z =\frac{104-106}{\sqrt{\frac{8.4^2}{80} +\frac{7.6^2}{70}}}= -1.53$

Part b

The p value would be given by this probability:

$p_v =2*P(z$

Part c

Since the p value is higher than the significance level provided we have enogh evidence to FAIL to reject the null hypothesis and we can't conclude that the true means are different at 5% of significance

6 0

3 years ago