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
Charra [1.4K]
3 years ago
13

A simple random sample of 44 men from a normally distributed population results in a standard deviation of 10.7 beats per minute

. The normal range of pulse rates of adults is typically given as 60 to 100 beats per minute. If the range rule of thumb is applied to that normal range, the result is a standard deviation of 10 beats per minute. Use the sample results with a 0.10 significance level to test the claim that pulse rates of men have a standard deviation equal to 10 beats per minute.a. Identify the null and alternative hypotheses.
b. Compute the test statistic; χ2 = ___ .
c. Find the​ P-value; ​P-value = ____.d. State the conclusion.
Mathematics
1 answer:
sladkih [1.3K]3 years ago
7 0

Answer:

Step-by-step explanation:

The Hypothesis :

H0 : σ = 10

H1 : σ ≠ 10

The Chisquare statistic, χ² ;

χ² = [(n-1) * s²] ÷ σ²

Sample size, n = 44 ; sample Standard deviation, s = 10.7 ; population standard deviation, σ = 10

χ² = [(44 - 1) * 10.7²] ÷ 10²

χ² = [43 * 114.49] ÷ 100

χ² = [4923.07] ÷ 100

χ² = 49.2307

Using the Pvalue from Chisquare calculator :

degree of freedom, df = n - 1 = 44 - 1 = 43

Pvalue = 0.238

You might be interested in
Help me what is 11u2 over 121v​
hodyreva [135]

Answer:

u^2/11v

Step-by-step explanation:

11u^2/121v=u^2/11v

Because 11/121=1/11.

8 0
3 years ago
A plant is already 57cm talk and it will grow one centimeter every month the plant height h in centimeters after m months is giv
jolli1 [7]

Answer:

the plant is 79 cm

Step-by-step explanation:

every month = 1 cm

months = 22 months

57 cm + 22 cm

= 79cm

8 0
3 years ago
Log2 (x+3)+log2 (x+3)=4
Rina8888 [55]
4log squared plus log (2)
7 0
3 years ago
Read 2 more answers
8. In the 21st century, people measure length in feet and meters. At various points in history, people measured length in hands,
velikii [3]
The answer is 4.5h=c
7 0
3 years ago
Find the value of d so that the line that passes through (a, b) and (c, d) has a slope of 12
fiasKO [112]

Answer:

I'm guessing that in the book or the homework sheet, they gave you

the values of 'a', 'b', and 'c', and you're supposed to find the value of 'd'.

If you have two points on the line, then the slope of the line is

                      (the change in 'y') divided by (the change in 'x') .

If the two points are (a, b) and (c, d), then the slope of the line is

                      (d - b) divided by (c - a) ,

and you have to find the value of 'd' that makes that whole expression

equal to 1/2.

                                     (d - b) / (c - a) = 1/2

Multiply each side by  (c - a):     (d - b) = 1/2(c - a)

Add 'b' to each side:                    d        =  1/2(c - a)  +  b

If you know the values of 'a', 'b', and 'c', you can find the value of 'd'.

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • Joey and Nolan are each solving the equation 13x - 42 = 18 - 7x.
    14·1 answer
  • A baker sells cookies for 1.5 each. If a minimum of two dozen cookies is ordered
    13·1 answer
  • 7 1/7 divided by 5 1/5
    15·1 answer
  • Find the lengths of the bases of the trapezoid with a height of 10 ft. One base is 4ft longer than the other bases. The area is
    7·1 answer
  • PLEASE HELP FAST IF YOU ARE GOOD AT GEOMETRY:<br> AREA OF THESE SHAPES::
    15·1 answer
  • What is linear equation?<br> What is quadratic equation?
    10·2 answers
  • Need help!!! “What is an equation of the line”??
    12·2 answers
  • Determine the total number of roots of each polynomial function <br> g(x) = 5.8 - 12/2+3
    15·1 answer
  • The perimeter is? Somebody help please !!!!!!!
    6·1 answer
  • F(x) = -4x2 + 19<br> Find f(-7)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!