1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
maria [59]
2 years ago
8

The cost of 5 gallons of ice cream has a standard deviation of 7 dollars with a mean of 25 dollars during the summer. What is th

e probability that the sample mean would differ from the true mean by greater than 2.2 dollars if a sample of 83 5-gallon pails is randomly selected?
Mathematics
1 answer:
victus00 [196]2 years ago
4 0

Answer:

0.000221

Step-by-step explanation:

Using the z score formula when a random number of samples is given =

z = (x-μ)/σ/√n, where

x is the raw score

μ is the population mean

σ is the population standard deviation = 7

n is random number of samples = 83

Note that:2.2 dollars = x-μ

z = 2.2/7/√8.3

z = 3.51402

Probability value from Z-Table:

P(x<27.7) = 0.99978

P(x>27.7) = 1 - P(x<27.7) = 0.00022069

Approximately = 0.000221

Hence, the probability that the sample mean would differ from the true mean by greater than 2.2 dollars if a sample of 83 5-gallon pails is randomly selected is 0.000221

You might be interested in
A bage contains 5 blue marbles, 3 red marbles, and 2 yellow marbles. You select a marble at radom. What is p(yellow)
vodomira [7]
Total marbles = 5 + 3 + 2 = 10
Total yellow marbles = 2
P(yellow)  = 2/10 = 1/5

Answer: 1/5
7 0
3 years ago
8.4 = 3 x m what is the value of m
nataly862011 [7]
M= 2.8

Alternate form:

14/5 or 2 4/5
5 0
2 years ago
The model includes a new park in the center of the city. If the dimensions of the
11111nata11111 [884]

The question is incomplete. Here is the complete question.

As a part of city building refurbishment project,  architects have constructed a scale model of several city builidings to present to the city commission for approval. The scale of the model is 1 inch = 9 feet.

The model includes a new park in the center of the city. If the dimensions of the park in the model are 9 inches by 17 inches, what are the actual dimensions of the park?

Answer: 81 feet by 153 feet

Step-by-step explanation: <u>Unit</u> <u>Scale</u> is a ratio comparing actual dimensions of an object to the dimensions of model representing the actual object.

In the refurbishment project, the unit scale is given by

1 inch = 9 feet

So, the dimensions of the new park in actual dimensions would be

1 inch = 9 feet

9 inches = x

x = 9.9

x = 81 feet

1 inch = 9 feet

17 inches = y

y = 17.9

y = 153 feet

The actual dimensions of the new park are 81 feet by 153 feet.

6 0
2 years ago
The surface area of the pyramid is<br><br> square inches.<br> fill in the blank
Rudik [331]

Answer:

9360 square inches

Step-by-step explanation:

4 0
3 years ago
Divide the following problem by hand (long division). Report your answer as a decimal (not remainder). (Show your work).
Agata [3.3K]

Answer:

122.88

Step-by-step explanation:

<u>3072</u>

25

122.88 sorry I forgot how to show all the work I love my calculator but hopefully the answer you need will help.

4 0
2 years ago
Other questions:
  • Ashley, Nikki, Emily, and Brooke are having a contest collecting pennies.
    15·2 answers
  • Solve the equation, 4 - (x + 1) = 6.
    13·1 answer
  • 20. solve the equation by completing the square. round to the nearest hundredth if necessary. x^2+10x=18 a. -11.56, 1.56 b.11.56
    13·1 answer
  • Solve the inequality.<br><br> 2(4+2x)≥5x+5<br><br> x≤−2<br> x≥−2<br> x≤3<br> x≥3
    15·2 answers
  • What is the gcf of 20 32 and 44
    13·1 answer
  • I need help with this
    6·2 answers
  • Plz help me solve this question ASAP!<br><br> R=200/(1-(1.011)^-20/0.011)
    7·1 answer
  • Find the perimeter. Simplify your answer.<br> 4y-5<br> 10y-4<br> 7y+8<br> 74-5
    12·2 answers
  • Find m∠I. Put the answer below.<br><br><br>m∠I =
    5·1 answer
  • When you do this please show the work
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!