Question

a. Use the Student's *t* distribution to find
*t*_{c} for a 0.99 confidence level when
the sample is 8. (Round your answer to three decimal
places.)

b. Use the Student's *t* distribution to find
*t*_{c} for a 0.90 confidence level when
the sample is 8. (Round your answer to three decimal
places.)

c. Sketch the area under the standard normal curve over the indicated interval and find the specified area. (Round your answer to four decimal places.)

The area to the right of *z* = 0.25 is .

d. Sketch the area under the standard normal curve over the indicated interval and find the specified area. (Round your answer to four decimal places.)

The area between

*z* = −1.38 and *z* = 1.98 is .

Answer #1

(a) Use the Student's t distribution to find
tc for a 0.99 confidence level when
the sample is 17. (Round your answer to three decimal places.)
(b) Use the Student's t distribution to find
tc for a 0.95 confidence level when
the sample is 15. (Round your answer to three decimal places.)

A)Use the Student's t distribution to find tc for a 0.99
confidence level when the sample is 27. (Round your answer to three
decimal places.) B)Use the Student's t distribution to find tc for
a 0.90 confidence level when the sample is 6. (Round your answer to
three decimal places.)

Use the Student's t distribution to find
tc for a 0.95 confidence level when
the sample is 26. (Round your answer to three decimal
places.)
Use the Student's t distribution to find
tc for a 0.90 confidence level when
the sample is 12. (Round your answer to three decimal places.)

20. Sketch the area under the standard normal curve over the
indicated interval and find the specified area. (Round your answer
to four decimal places.) The area to the left of z = −0.57 is
21. Sketch the area under the standard normal curve over the
indicated interval and find the specified area. (Round your answer
to four decimal places.) The area to the left of z = 0.43 is
22. Sketch the area under the standard normal curve over...

Sketch the area under the standard normal curve over the
indicated interval and find the specified area. (Round your answer
to four decimal places.)
The area to the right of z = 1.49 is
Sketch the area under the standard normal curve over the
indicated interval and find the specified area. (Round your answer
to four decimal places.)
The area to the left of z = −1.34 is
Sketch the area under the standard normal curve over the
indicated interval...

Sketch the area under the standard normal curve over the
indicated interval and find the specified area. (Round your answer
to four decimal places.) The area to the right of z = −1.13 is
.
Sketch the area under the standard normal curve over the
indicated interval and find the specified area. (Round your answer
to four decimal places.) The area to the right of z = −2.15 is
.
Sketch the area under the standard normal curve over the...

A-
Sketch the area under the standard normal curve over the indicated
interval and find the specified area. (Round your answer to four
decimal places. The area to the left of z = - 1.41 is
B- Sketch the area under the standard normal curve over the
indicated interval and find the specified area. (Round your answer
to four decimal places. The area to the right of z = 0.21 is
C- Sketch the area under the standard normal curve...

1.Sketch the area under the standard normal curve over the
indicated interval and find the specified area. (Round your answer
to four decimal places.)The area to the left of
z = −1.44 is ____________
2 Sketch the area under the standard normal curve over the
indicated interval and find the specified area. (Round your answer
to four decimal places.)The area to the right of z = 1.62
is___.
3.Sketch the area under the standard normal curve over the
indicated interval...

Use the Student's t distribution to find tc for a 0.90
confidence level when the sample is 20. (Round your answer to three
decimal places.)

Use the Student's t distribution to find tc for a 0.90
confidence level when the sample is 6. (Round your answer to three
decimal places.)

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