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
Lisa [10]
3 years ago
13

The claim is that the white blood cell counts of adult females are normally​ distributed, with a standard deviation equal to 1.6

81.68. a random sample of 3939 adult females has white blood cell counts with a mean of 7.237.23 and a standard deviation of 1.951.95. find the value of the test statistic.
Mathematics
1 answer:
loris [4]3 years ago
3 0
The population standard deviation, σ = 1.68, the sample standard deviation, s = 1.95, the sample mean =7.23,  and the sample size, n = 39.The test statistics is given by
T=(n - 1) (s / σ)²
= (39 - 1) (1.95 / 1.68)²
= 38 (1.35)= 51.196
You might be interested in
Now I need help pplz
loris [4]
25 hope it helps (;......

3 0
3 years ago
Read 2 more answers
A company produces remote-controlled helicopters. The company’s profit, in thousands of dollars, as a function of the number of
erma4kov [3.2K]
We simply substitute 6 into the equation:
f(6) = -2(6 - 4)² + 22
f(6) = 14

The company's profit is 14 thousand dollars
hope it helped :).
6 0
3 years ago
Read 2 more answers
Alex is buying a sweater that originally costs $35 and a pair of jeans that originally cost $28. If the sweater is marked down 3
kifflom [539]

Answer:

$63 when you add them both together. I don't know how to do the other part, but I know you should find the percenatge. The first is to multiply 63 * 100/1

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
the Millers, Rigbys, and the Smiths went on a camping trip. The Millers spent $100 more then Rigbys, and the Smiths spent twice
KATRIN_1 [288]

Let  \: x \:  be \:  the  \: money  \: the \:  Millers \:  spent \\ The  \: Rigbys  \: spent:x-100 \\ The  \: Smiths \:  spent:2x \\ We  \: have  \: an \:  equation:x + x - 100 + 2x = 580 \\  <  =  > 4x = 680 \\   <  =  > x = 170 =  > 2x = 340 \\ So \:  the \:  Smiths  \: spent \: \$340

8 0
4 years ago
What is the best method to geometrically show the addition of complex numbers?
Jlenok [28]

Answer:

Multiplying a complex number by a real number

Explanation:

For example, 2 times 3 + i is just 6 + 2i. Geometrically, when you double a complex number, just double the distance from the origin, 0. Similarly, when you multiply a complex number z by 1/2, the result will be half way between 0 and z.

8 0
3 years ago
Other questions:
  • Determine the total number of roots of each polynomial function <br>f (x) = (3x^4 + 1)^2​
    15·2 answers
  • Multiply the equation (t-7)^3
    9·1 answer
  • Which Statement is true ?
    10·1 answer
  • Scores on the Critical Reading portion of the SAT college entrance test in a recent year were roughly Normal with mean 496 and s
    6·1 answer
  • An electronic store is advertising a discount of 18 percent off the inventory. Constantine buys a DVD player that cost $300. Wha
    15·1 answer
  • WHAT ARE THE THREE DIFFERENT TYPES OF ANGLES!!!!!!??
    5·1 answer
  • I will thank you!!!!
    5·1 answer
  • Find the unknow number 7/12 - ? = 1/6
    6·2 answers
  • Some help me please?
    14·1 answer
  • Which function is shown on the graph?​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!