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VashaNatasha [74]
3 years ago
15

PLS I NEED HELP TY SFM

Mathematics
1 answer:
yan [13]3 years ago
5 0

Answer:

32

Step-by-step explanation:

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A sample of 140 Vopstra customers have had their annual phone charge recorded for the previous calendar year. The data were used
taurus [48]

Answer:

Correct option: (a)

Step-by-step explanation:

A confidence interval is an interval estimate of the parameter value.

A (1 - <em>α</em>)% confidence interval implies that the confidence interval has a (1 - <em>α</em>)% probability of consisting the true parameter value.

OR

If 100 such confidence intervals are made then (1 - <em>α</em>) of these intervals would consist the true parameter value.

The 92% confidence interval for the mean annual phone charge of all Vopstra customers is:

\$470\pm \$65=(\$405, \$535)

This confidence interval implies that true mean annual phone charge of all Vopstra customers is contained in the interval ($405, $535) with 0.92 probability.

Thus, the correct option is (a).

6 0
4 years ago
PLEASE HELP QUICK 3t-2=-11
valentina_108 [34]
-3
step by step
add 2 to -11 and divide-9 by 3
5 0
3 years ago
Read 2 more answers
Another easy one, 30 points + Brainliest
Andrew [12]

<u>1.03*10^{6}>9.8*10^{5</u>

Answer:

4.01*10³<5*10^(-5)false

3.9*10^5<8.06*10^{-7}false

1.03*10^{6}>9.8*10^{5}true

7.8*10^{2}>2.1*10^{3}false

7 0
3 years ago
Read 2 more answers
You had planned to go out for pizza with your friends Saturday night. You’ve all gathered at your place but when you’re about to
skelet666 [1.2K]

Answer:

$20

Step-by-step explanation:

the delivery guy show up early and that guy deserve 20bucks

5 0
3 years ago
What is the value of 3|2x + y|when x = 6 and y = -4?<br> -48<br> -24<br> 24<br> 48
Gelneren [198K]

Answer:

24

Step-by-step explanation:

i answered it and it was correct

your welcome! :)

8 0
3 years ago
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