What is the scale factor of ABC to A DEF?

The manager of a computer retails store is concerned that his suppliers have been giving him laptop computers with lower than av

34kurt

Answer:

Probability that the 50 randomly selected laptops will have a mean replacement time of 3.1 years or less is 0.0092.

Yes. The probability of this data is unlikely to have occurred by chance alone.

Step-by-step explanation:

We are given that the replacement times for the model laptop of concern are normally distributed with a mean of 3.3 years and a standard deviation of 0.6 years.

He then randomly selects records on 50 laptops sold in the past and finds that the mean replacement time is 3.1 years.

Let M = sample mean replacement time

The z-score probability distribution for sample mean is given by;

Z = $\frac{ M-\mu}{\frac{\sigma}{\sqrt{n} } }} }$ ~ N(0,1)

where, $\mu$ = population mean replacement time = 3.3 years

$\sigma$ = standard deviation = 0.6 years

n = sample of laptops = 50

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

Now, Probability that the 50 randomly selected laptops will have a mean replacement time of 3.1 years or less is given by = P(M $\leq$ 3.1 years)

P(M $\leq$ 3.1 years) = P( $\frac{ M-\mu}{\frac{\sigma}{\sqrt{n} } }} }$ $\leq$ $\frac{ 3.1-3.3}{\frac{0.6}{\sqrt{50} } }} }$ ) = P(Z $\leq$ -2.357) = 1 - P(Z $\leq$ 2.357)

= 1 - 0.99078 = 0.0092 or 0.92%

So, in the z table the P(Z $\leq$ x) or P(Z < x) is given. So, the above probability is calculated by looking at the value of x = 2.357 in the z table which will lie between x = 2.35 and x = 2.36 which has an area of 0.99078.

Hence, the required probability is 0.0092 or 0.92%.

Now, based on the result above; Yes, the computer store has been given laptops of lower than average quality because the probability of this data is unlikely to have occurred by chance alone as the probability of happening the given event is very low as 0.92%.

8 0

3 years ago

3 points that equal y=x+6

-BARSIC- [3]

(0,6),(4,10),(1,7), all you need to do is find a random y value and add 6 to it to get the x value.

5 0

3 years ago

Read 2 more answers

Help me with this question please!! no links!!

In-s [12.5K]

50.24
4 squared is 16
16•3.14= 50.24
A= 3.14(4)^2
:)

3 0

3 years ago

Which graph shows a solution of approximately (1.2, -1.3)

Anton [14]

Answer:

D

Step-by-step explanation:

5 0

2 years ago

HELP DUE IN 10 MINUTES!!!

AlexFokin [52]

Answer:

From September 2 through September 30, 2021, new Instacart customers in the United States that use Apple Pay at checkout receive $30 off their order of $50 or more, while supplies last.

Existing customers can receive $5 off their order of $35 or more through October 3, 2021.

Terms of the offer

The offer for new customers runs from September 2 through September 30, 2021. The offer for existing customers runs through October 3, 2021.

Qualifying for the offer

To qualify for this offer, you must use Apple Pay at checkout.

Redeeming the offer

You can redeem this offer through the iOS Instacart app or at instacart.com. You MUST redeem the offer using the United States version of the Instacart platform.

There are 2 ways to redeem the promotion—

Apple Pay email

You’ll receive a promotion code if you’re subscribed to Apple Pay emails.

Select the Instacart logo in the Apple Pay email. This’ll open your Instacart app or instacart.com.

If you’re logged in to an existing Instacart account, you’ll be sent to the Instacart homepage.

If you don’t have an Instacart account, sign up for an Instacart account.

After logging in or creating an account, select the 3 horizontal lines in the upper left-hand corner.

Select Add promo or gift card.

Enter the promo code you received in the Apple Pay email.

Select Add to account.

Instacart app banner—

Download the iOS Instacart app.

Sign up for Instacart or log into your existing account.

Enter the main menu. If you have Apple pay enabled, you’ll see a promotion banner located at the top.

Tap Redeem offer.

If you qualify, you’ll receive a confirmation notification that you successfully redeemed the promotion.

This promotion automatically applies at checkout when using Apple Pay as your payment method.

For new customers, it’s valid on 1 order placed with a single retailer between September 2 through September 30, 2021. For existing customers, it’s valid on 1 order placed with a single retailer through October 3, 2021.

The offer won’t apply if you change your payment method.

Terms and Conditions

New user offer terms: $30 off is valid through 9/30/2021 at 11:59 PM PT and is valid only in the United States for new users making their first order of $50 or more with one retailer and purchased through Instacart.com website or Instacart mobile iOS app using Apple Pay as payment method, while supplies last. Discount will be applied to the total purchase price for all non-alcohol products, and excludes taxes, service fees, special handling fees and/or other fees; offer cannot be applied to alcohol products. Deliveries subject to availability. In order to take advantage of this offer, customers must have a valid account on Instacart.com with a valid form of accepted payment on file. Only one offer per household. Instacart reserves the right to modify or cancel this offer at any time. Offer may not be sold, copied, modified, transferred or used retroactively for prior purchases. Void where restricted or prohibited by law. Offer may not be combined with any other sale, promotion, discount, code, coupon, and/or offer. Offer has no cash value. Instacart is not a retailer or seller. Instacart may not be available in all zip or post codes.

Existing user offer terms: $5 off is valid through 10/3/2021 at 11:59 PM PT and is valid only in the United States for one order of $35 or more with one retailer and purchased through Instacart.com website or Instacart mobile iOS app using Apple Pay as payment method, while supplies last. Discount will be applied to the total purchase price for all non-alcohol products, and excludes taxes, service fees, special handling fees and/or other fees; offer cannot be applied to alcohol products. Deliveries subject to availability. In order to take advantage of this offer, customers must have a valid account on Instacart.com with a valid form of accepted payment on file. Only one offer per household. Instacart reserves the right to modify or cancel this offer at any time. Offer may not be sold, copied, modified, transferred or used retroactively for prior purchases. Void where restricted or prohibited by law. Offer may not be combined with any other sale, promotion, discount, code, coupon, and/or offer. Offer has no cash value. Instacart is not a retailer or seller. Instacart may not be available in all zip or post codes.

Step-by-step explanation:

7 0

2 years ago