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Archy [21]
3 years ago
10

In order to determine whether or not there is a significant difference between the mean hourly wages paid by two companies (of t

he same industry), the following data have been accumulated. Company A Company B Sample size 80 60 Sample mean $16.75 $16.25 Population standard deviation $1.00 $.95 A point estimate for the difference between the two population means is____________.

Mathematics
1 answer:
NNADVOKAT [17]3 years ago
6 0

Answer:

We have to reject the null hypothesis because the t-value is greater than the critical value .

Step-by-step explanation:

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The choir is selling candy bars to raise money for a trip they sell each candy bar for $5 there are 7 candy bars in each box and
Reika [66]

Answer:$2800

Step-by-step explanation: Lets first figure out how much money a box of candy bars is worth. We know that each candy bar is worth $5 and that there are 7 candy bars per box. We can multiply 7*5 to figure out that each box is worth $35.

Now lets figure out how many boxes can be sold each day. Each student can sell two boxes a day. 5 students selling 2 boxes each is 5*2= 10 boxes total sold a day.

Now finally we use what we found to figure out the amount of money made per day. We know that there are 10 boxes being sold and that each box makes them $35. We just multiply 10 boxes by $35 to get $350 dollars each day.

Since they sell for 8 days we just multiply 8*$350 to get $2800.

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3 years ago
Question c please, it’s about probabilities. i attached photo
Reil [10]

Answer:

200

Step-by-step explanation:

Assuming all of the pie chart sections are equal.

There are 5 equal sections so divide the 1000 spins by 5 and you get 200

6 0
3 years ago
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Ber [7]

Answer:

16/40 = 0.4

Step-by-step explanation:

Find total marbles then divide the number of green by total.

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3 years ago
Somebody please help. I need to finish this you would be a lifesaver.
Vanyuwa [196]

Answer:

Step-by-step explanation:

so what you want to do is take -1/4x+2 3/4 and solve for x and once you got what x is plug it in to the second part 1/2^x +1

4 0
3 years ago
Please help, When do you need to approximate an irrational number with a rational value? Explain your understanding and give an
disa [49]

9514 1404 393

Answer:

  in any numerical computation; numerical values can only be rational numbers

Step-by-step explanation:

Any time a number is written down as a numerical value, it is a rational number. The numerical values we give to π or e or any root, logarithm, trig function, and polynomial solution are, of necessity, rational approximations to the true value. An "exact" value for an irrational number cannot be written down, so it must be approximated any time its numerical value is needed.

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3 years ago
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