Are both students earning the same amount of money per hour? Show your work to justify your answer.

Mathematics

2 answers:

krok68 [10]2 years ago

7 0

Answer:

No, Jimmy is earning $5 per hour while Amanda is earning close to $6.66 per hour.

Step-by-step explanation:

Have a nice day/night :)

Anvisha [2.4K]2 years ago

3 0

No!no because jimmy earning 5$ per hour

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Two random samples with sizes 100 and n are chosen from the populations with the means 85.6 and 82.1. They have standard deviati

Deffense [45]

Answer:

$SE= \sqrt{\frac{\sigma^2_1}{n_1}+\frac{\sigma^2_2}{n_2}}$

And for this case if we have the same sample size we got the minimum value when we have the higher value fo n for each one and for this case would be the answer:

b. 120

Step-by-step explanation:

For this case we have the following info given:

$n_1 = n_2 = 100$

$\mu_1 = 85.6$

$\mu_2 = 82.1$

$\sigma_1 =12.4$

$\sigma_2 = 8.9$

We assume that the variable of interest is the linear combination of the two means and for this case the standard error would be given by:

$SE= \sqrt{\frac{\sigma^2_1}{n_1}+\frac{\sigma^2_2}{n_2}}$

And for this case if we have the same sample size we got the minimum value when we have the higher value fo n for each one and for this case would be the answer:

b. 120

7 0

3 years ago

!!!PLEASE HELP ME!!!

telo118 [61]

Answer:

its c

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Please help, if able! 10 points up^^