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
Lorico [155]
2 years ago
12

The average price of an item is $42 with a standard deviation of $3

Mathematics
1 answer:
FinnZ [79.3K]2 years ago
8 0

The mean price goes between $ 41.16 and $ 42.84, so a value of $ 48 is unusually high.

Since the average price of an item is $ 42 with a standard deviation of $ 3, to find a 98% confidence interval about the mean, and determine if a value of X = 48 is unusually high or if it is normal, the following calculations should be done:

  • (((42 - 3) + (42 + 3)) / 2) x 0.98 = X
  • ((39 + 45) / 2) x 0.98 = X
  • 42 x 0.98 = X
  • 41.16 = X

  • (((42 - 3) + (42 + 3)) / 2) x 1.02 = X
  • ((39 + 45) / 2) x 1.02 = X
  • 42 x 1.02 = X
  • 42.84 = X

Therefore, as the mean price goes between $ 41.16 and $ 42.84, a value of $ 48 is unusually high.

Learn more about maths in brainly.com/question/25908442

You might be interested in
Tomas is a commercial real estate agent who earns a yearly salary of $82,500 and a 2.5% commission on his total sales. If Tomas
Nikitich [7]

Answer:

Step-by-step explanation:

tomas earning is $176,250

7 0
2 years ago
Question 3 (Multiple Choice Worth 1 points)
Evgen [1.6K]

Answer:

g(x) = x + 6

Step-by-step explanation:

The parent function is given as:

f(x) = x + 8

We want to find a new function that results after shifting f(x), 2 units to the right.

Let that function be g(x), then

g(x) = f(x - 2)

We replace x by x-2 in f(x) to get:

g(x) = x - 2 + 8

When we simplify, we obtain:

g(x) = x + 6

8 0
3 years ago
Please help:<br> In Δ ABC, sin A= 77, sin C= 23, and c =16, find the length of A.
Dafna1 [17]

Answer:

39.9

Step-by-step explanation:

a/sinA = c/sinC

a/sin(77) = 16/sin(23)

a = sin(77) × 16/sin(23)

a = 39.89935764

3 0
3 years ago
Triangles QPT and QRS are similar. Find x.
Step2247 [10]

Answer:

from those are similar, the ratio of side will be 40/24=x/20 so x=33.3333 is equal 33 and one-third.

6 0
3 years ago
Read 2 more answers
Are the two triangles in the image above similar? If so then what is the correct postulate: SSS, SAS, or AA or None
viktelen [127]

the triangles are similar because of SSS

3 0
3 years ago
Other questions:
  • How can the average rate of change be identified for a function?
    9·1 answer
  • If f and g are differentiable functions for all real values of x such that f(1) = 4, g(1) = 3, f '(3) = −5, f '(1) = −4, g '(1)
    6·1 answer
  • To convert 0.7 hours into minutes, which ratio could you multiply by? Remember that 1 hour = 60 minutes.
    14·1 answer
  • Solve 4r2 – 7 = 29.<br> a. +-6<br> b. +-3<br> c. +-4<br> d. +-5
    11·1 answer
  • A car used 11 1/2 gal of gasoline on a 345-mile trip. How many miles can this car travel on 1 gal of gasoline? ____mi
    9·1 answer
  • Solve the exponential equation <br> 1/16=64^4x-3
    12·2 answers
  • Find the sum of -3/4+ -7/6
    8·1 answer
  • Find the distance between<br> (5 , 1 ) and ( 3 ,6)
    11·1 answer
  • Roger is 16 years old. His sister Betty is 3 years more than half of his age. Write a numerical expression to represent Betty's
    5·2 answers
  • Assume a bank loan requires an interest payment of $85 per year and a principal payment of $1,000 at the end of the loan's eight
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!