The chief of a PC retails store is worried that his providers have been giving him PCs below the norm quality. His examination shows that swap times for the model PC of concern are typically appropriated with a mean of 4.2 years and a standard deviation of 0.6 years. He at that point haphazardly chooses records on 37 PCs sold before and tracks down that the mean substitution time is 4 years.

Accepting that the PC substitution times have a mean of 4.2 years and a standard deviation of 0.6 years, discover the likelihood that 37 haphazardly chose PCs will have a mean substitution season of 4 years or less.

P(M < 4 years) =

Enter your answer as a number precise to 4 decimal spots. NOTE: Answers got utilizing accurate z-scores or z-scores adjusted to 3 decimal spots are acknowledged.

In light of the outcome above, does it give the idea that the PC store has been given workstations of below the norm quality?

No. The likelihood of getting this information is sufficiently high to have been an opportunity event.

Indeed. The likelihood of this information is probably not going to have happened by chance alone.

You are the providing food supervisor for an upscale lodging. Last Saturday your staff catered a wedding gathering in the fundamental dance hall, during which 144 chicken suppers, 72 steak meals, and 264 fish suppers were served. All suppers are a similar cost. The lodging charges "per individual" for catered occasions.

(a)

What percent of the complete suppers served was each kind of supper?

chicken %

steak %

fish %

(b)

On the off chance that $21,600 was charged for every one of the dinners, what amount of income (in $) did each type create?

chicken $

steak $

fish $

(c)

On the off chance that a 20% cost increment becomes effective one month from now, what will be the new cost (in $) per dinner?

$

(d)

At the point when picture takers, flower specialists, DJs, groups, and other external merchants are reserved through your office for occasions at the inn, a 9 1/2% "locater's expense" is charged. A year ago, $165,000 of such administrations were reserved. What amount (in $) did the inn make on this assistance?

$

(e)

In the event that your supervisor is expecting $22,800 in "locater's expense" income one year from now, what sum (in $) of these administrations should be reserved?

$

An organization produces steel poles. The lengths of the steel bars are typically circulated with a mean of 226.7-cm and a standard deviation of 1.1-cm. For shipment, 9 steel bars are packaged together.

Discover the likelihood that the normal length of a haphazardly chosen heap of steel bars is between 227.7-cm and 227.7-cm.

P(227.7-cm < M < 227.7-cm) =

m7m

Enter your answer as a number precise to 4 decimal spots. Answers got utilizing precise z-scores or z-scores adjusted to 3 decimal spots are acknowledged.

An organization produces steel bars. The lengths of the steel poles are regularly dispersed with a mean of 226.7-cm and a standard deviation of 1.1-cm. For shipment, 9 steel poles are packaged together.

Discover the likelihood that the normal length of a haphazardly chosen heap of steel bars is between 227.7-cm and 227.7-cm.

P(227.7-cm < M < 227.7-cm) =

Enter your answer as a number precise to 4 decimal spots. Answers acquired utilizing careful z-scores or z-scores adjusted to 3 decimal spots are acknowledged.