The mean SAT score in arithmetic,

, is

534

. The standard deviation of these scores is

25

. By and large, than the mean score

534

. An irregular example of

90

understudies finished the course, and their mean SAT score in math was

540

. At the

0.05

level of importance, would we be able to reason that the planning course does what it claims? Expect that the standard deviation of the scores obviously graduates is moreover

25

.

Play out a one-followed test. At that point total the parts underneath.

Convey your middle of the road calculations to at least three decimal places, and round your reactions as determined beneath. (On the off chance that vital, counsel a rundown of recipes.)

(a) State the invalid speculation

H0

also, the elective theory

H1

.

H0:

H1:

(b) Determine the sort of test measurement to utilize.

(Choose one)

(c) Find the worth of the test measurement. (Round to at least three decimal spots.)

(d) Find the p-esteem. (Round to at least three decimal spots.)

(e) Can we support the planning course's case that its alumni score higher in SAT?

Indeed No

A producer guarantees that the mean lifetime,

, of its lights is

53

months. The standard deviation of these lifetimes is

4

months. Eleven bulbs are chosen aimlessly, and their mean lifetime is discovered to be

56

months. Expect that the populace is typically appropriated. Would we be able to finish up, at the

0.05

level of importance, that the mean lifetime of lights made by this maker varies from

53

..17..

months?

Play out a two-followed test. At that point total the parts underneath.

Convey your halfway calculations to at least three decimal places, and round your reactions as indicated beneath. (On the off chance that fundamental, counsel a rundown of equations.)

(a) State the invalid speculation

H0

also, the elective speculation

H1

.

H0:

H1:

(b) Determine the sort of test measurement to utilize.

(Choose one)

(c) Find the worth of the test measurement. (Round to at least three decimal spots.)

(d) Find the two basic qualities. (Round to at least three decimal spots.)

also,

(e) Can we reason that the mean lifetime of lights made by this maker varies from

53

months?

Indeed No