A populace has a mean of = 30 and a standard deviation of = 8

A) If the populace dissemination is typical, what is the likelihood of getting an example mean more prominent than M = 32 for an example of n = 4?

B) If the populace conveyance is decidedly slanted, what is the likelihood of getting an example mean more noteworthy than M = 32 for an example of n = 4?

C) If the populace circulation is ordinary, what is the likelihood of acquiring an example mean more prominent than M = 32 for an example of n = 64?

D) If the populace dissemination is emphatically slanted, what is the likelihood of acquiring an example mean more noteworthy than M = 32 for an example of n = 64?

The Bell organization fabricates PCs. An investigation shows that the life expectancies of their

PCs are ordinarily circulated, with a mean of 4.0 years and a standard deviation of 1.2 years.

How long should the organization warrant its PCs if the organization wishes under 4% of its

PCs to fall flat during the guarantee time frame?

An educator tracks down that the evaluations in a huge class are typically conveyed. The mean of the evaluations is

64, and the standard deviation is 10. On the off chance that the teacher chooses to give An evaluation to the understudies in the

top 9% of the class, what is the removed score for A?

A bike drives from Buendia to Quiapo and back utilizing a similar course ordinary. There are four stoplights on the course.

Allow x to mean the quantity of red lights the bike experiences going from Beundia to Quiapo and y signify the number experienced on the bring trip back. Information gathered over a significant stretch propose that the joint likelihood dispersion for (x, y) is given by

x

y

0

1

2

3

4

0

0.01

0.01

0.03

0.07

0.01

1

0.03

0.05

0.08

0.03

0.02

2

0.03

0.11

0.15

0.01

0.01

3

0.02

0.07

0.1

0.03

0.01

4

0.01

0.06

0.03

0.01

0.01

As the quantity of prevent lights from Buendia to Quiapo experienced by the cruiser expands, the quantity of stoplights of its return trip tends to (increment, decline, or be uncorrelated). Accordingly, X and Y have a (zero, negative, or positive) covariance. The covariance was determined to be (mathematical worth).

*Describe the relationship whether a solid, a feeble, or no.

X and Y have relationship.

What is the relationship esteem? =

Test the case about the population mean,

,

at the given degree of importance utilizing the given example measurements.

=50;

=0.06;

=3.07.

Sample measurements:

x=49.6,

n=56

Recognize the invalid and elective speculations. Pick the right answer beneath.

A.

H0:

=50

Ha:

<50

B.

H0:

=50

Ha:

>50

C.

H0:

<50

Ha:

=50

D.

i17i

H0:

50

Ha:

=50

E.

H0:

=50

Ha:

50

Your answer is right.

F.

H0:

>50

Ha:

=50

Figure the government sanctioned test measurement.

The government sanctioned test measurement is .

(Round to two decimal spots as required.)

Decide the critical value(s). Select the right decision underneath and fill in the appropriate response box to finishyour decision.

(Round to two decimal spots as required.)

A.

The basic worth is

B.

The basic qualities are

.

Your answer is right.

Decide the result and finish of the test. Pick the right answer underneath.

A.

Neglect to dismiss

H0.

At the

6%

significance level, there

isn't

enough proof to help the case.

B.

Reject

H0.

At the

6%

significance level, there

is

enough proof to dismiss the case.

C.

Reject

H0.

At the

6%

significance level, there

is

enough proof to help the case.

D.

Neglect to dismiss

H0.

At the

6%

significance level, there

isn't

enough proof to dismiss the case.