answer.
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
nexus9112
8 days ago
15

The owner of a local health food store recently started a new ad campaign to attract more business and wants to test whether ave

rage daily sales have increased. Historically average daily sales were approximately $2,700. After the ad campaign, the owner took another random sample of forty-five days and found that average daily sales were $2,984 with a standard deviation of approximately $585. Calculate the upper bound of the 95% range of likely sample means for this one-sided hypothesis test using the CONFIDENCE.NORM function.
Mathematics
1 answer:
lawyer [3.9K]8 days ago
8 0

Answer:

The upper bound of the confidence interval is 3127 $/day.

Step-by-step explanation:

With the new sample, we can determine the one-sided 95% confidence interval.

For this interval (one sided, with 95% confidence), z=1.64.

The total number of observations (n) is 45 days.

The average is 2984 and the standard deviation is 585.

We can estimate the upper limit of the confidence interval as

UL=X+z*s/\sqrt{n} \\UL = 2984 + 1.64*585/\sqrt{45}=2984+ 959.4/6.708=2984+143=3127

You might be interested in
Levi invested $8,500 in an account paying an interest rate of 3.4% compounded continuously. Assuming no deposits or withdrawals
Svet_ta [4296]

Response:

433.44

Detailed breakdown:

5 0
12 days ago
Read 2 more answers
A group of college students built a self-guided rover and tested it on a plane surface. They programmed the vehicle to move alon
Leona [4145]
Answer and image included:

3 0
7 days ago
Read 2 more answers
Explain the steps for dividing decimals. Write three or four sentences.
PIT_PIT [3895]

Response:

Step-by-step explanation:

Shift the decimal points in both the divisor and the dividend.

Transform the divisor (the number you're dividing by) into a whole number by moving its decimal to the furthest right. Simultaneously, adjust the dividend's decimal (the number being divided) the same number of places to the right.

In the quotient (the result), place a decimal point directly over where the decimal point is now located in the dividend.

Proceed with the division as normal, ensuring proper alignment so the decimal point appears correctly.

Align each digit in the quotient directly over the last digit of the dividend utilized in that step.

4 0
7 days ago
Read 2 more answers
Customer: “I would like to purchase 20 products at a cost of $65.00 per product. What will be my total?” Employee: “Your state h
Svet_ta [4296]
1 product = $65.00
20 products = 65 x 20 = $1300

Sales Tax is 3.5% of $1300 = 0.035 x $1300 = $45.50

Grand total = $1300 + $45.50 = $1345.50

--------------------------------------------------------------
Response: $1345.50
--------------------------------------------------------------
8 0
5 days ago
Read 2 more answers
Which expression is equivalent to StartFraction 3 x Superscript negative 6 Baseline y Superscript negative 3 Baseline Over 15 x
zzz [4002]

Answer:

The appropriate expression is 1 Over 5 x Superscript minus 8 Baseline y Superscript minus 13 Baseline EndFraction

Step-by-step explanation:

In order to simplify the expression \frac{3x^{-6}y^{-3} }{15x^{2}y^{10} } where x ≠ 0, y ≠ 0, we must work through the given expression.

\frac{3x^{-6}y^{-3} }{15x^{2}y^{10} }\\= \frac{3}{15} x^{-6-2}y^{-3-10}\\ = \frac{3}{15}x^{-8}y^{-13} \\ =\frac{1}{5}x^{-8}y^{-13} \\

The appropriate expression is 1 Over 5 x Superscript minus 8 Baseline y Superscript minus 13 Baseline EndFraction

6 0
7 days ago
Other questions:
  • A fish bowl contains blue, green and red plastic fish. When a fish is picked out at random, the probability of it being blue is
    14·1 answer
  • Triangle A B C is reflected across the line of reflection m to form triangle A prime B prime C prime. Triangle A prime B prime C
    9·2 answers
  • Anna draws an angle in her notebook. in how many points do the rays intersect?
    15·2 answers
  • Circle M has a radius of 7.0 cm. The shortest distance between P and Q on the
    11·2 answers
  • Angle EBC=3r+10<br> Angle ABE=2r-20<br> Find angle EBF
    6·1 answer
  • Find the inverse of y=x2-10x
    14·2 answers
  • Lin made a mixture consisting of 24 ounces of instant tea and 12 ounces of green tea. Approximately how many milligrams of caffe
    7·2 answers
  • Tom says he is comparing banks to see what interest rates they offer on savings accounts. Explain how Tom should use the informa
    10·2 answers
  • A rectangle has area 64 m2. Express the perimeter of the rectangle as a function of the length L of one of its sides. State the
    8·1 answer
  • Line JK passes through points J(–3, 11) and K(1, –3). What is the equation of line JK in standard form?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!