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
Scorpion4ik [409]
2 years ago
14

What is the area underneath a normal curve always equal to?

Mathematics
2 answers:
mote1985 [20]2 years ago
6 0
The total area under a normal curve is equal to 1! Hope this helps!
Pani-rosa [81]2 years ago
3 0
The correct answer is C. One
You might be interested in
The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales
mihalych1998 [28]

Answer:

We conclude that the mean number of calls per salesperson per week is more than 37.

Step-by-step explanation:

We are given that the Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales representatives make an average of 37 sales calls per week on professors.

To investigate, a random sample of 41 sales representatives reveals that the mean number of calls made last week was 40. The standard deviation of the sample is 5.6 calls.

<em><u>Let </u></em>\mu<em><u> = true mean number of calls per salesperson per week.</u></em>

SO, <u>Null Hypothesis</u>, H_0 : \mu \leq 37   {means that the mean number of calls per salesperson per week is less than or equal to 37}

<u>Alternate Hypothesis,</u> H_A : \mu > 37   {means that the mean number of calls per salesperson per week is more than 37}

The test statistics that will be used here is <u>One-sample t test statistics</u> as we don't know about the population standard deviation;

                        T.S.  = \frac{\bar X -\mu}{\frac{s}{\sqrt{n} } }  ~ t_n_-_1

where, \bar X = sample mean number of calls made last week = 40

             s = sample standard deviation = 5.6 calls

             n = sample of sale representatives = 41

So, <em><u>test statistics</u></em>  =   \frac{40-37}{\frac{5.6}{\sqrt{41} } }  ~ t_4_0

                               =  3.43

Hence, the value of test statistics is 3.43.

<em>Now at 0.025 significance level, the t table gives critical value of 2.021 at 40 degree of freedom for right-tailed test. Since our test statistics is more than the critical value of t as 3.43 > 2.021, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region.</em>

Therefore, we conclude that the mean number of calls per salesperson per week is more than 37.

4 0
3 years ago
For the functions f and g, find (f o g)(8). f(x) = 17x^2 - 10x, g(x) = 9x - 9
Andreyy89

Hey mate. Here is your answer.

Set up the composite function and evaluate.

g (17x^2 - 10x) = 153x^2 - 90x - 9

Hope this helps.

5 0
3 years ago
17. Add - 16 + (-27)
Akimi4 [234]

just add the whole numbers and add negative infront          -16+-27= -43

4 0
3 years ago
If Steve runs 4/5 mile each day, how many miles will Steve run in 5 days?
Aleksandr-060686 [28]

Answer:

4 miles

Step-by-step explanation:

6 0
3 years ago
3 friends are selling items at a bake sale. May makes $23.25 selling bread. Inez sells gift baskets and make 100 times as much a
Zigmanuir [339]

Answer:

May: $23.25

Inez: $2325

Jo: $232.5

Step-by-step explanation:

Inez makes 100 times as much as May. Since May makes $23.25, move the decimal point two places to the right to multiply the number by 100. You will get $2325. Jo makes 1/10 of the money Inez makes. Pretend there is a decimal point at the end of 2325. Move the decimal point one place to the left to divide by 10. You will get $232.5.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Alex stores fertilizer for his farm in a rectangular box. The length of the box is 6 feet, width is 3 inches, and height is 9 in
    13·1 answer
  • Find tanX if cotX =2
    10·1 answer
  • What is the difference between rotating a figure about a given point that is a vertex and rotating the same figure about the ori
    11·1 answer
  • Can you please help with rate please help filling in the missing box
    11·1 answer
  • In the diagram, StartFraction V Z Over Y Z EndFraction = StartFraction W Z Over X Z EndFraction.
    10·1 answer
  • Select all the values of x so g(x) is not a function.
    13·1 answer
  • Use the Distributive Property to expand the expression -3(6.3x + 1.5y)
    6·1 answer
  • What is the probability of throwing 2 dice and getting the sum of 12?
    6·1 answer
  • I need a little help please
    7·1 answer
  • Prem earns Rs. 16000 a month. He spends half of his income on food, three - tenth of the remaining income on house rent and Rs.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!