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
PLEASE HELP WITH THIS MATH PROBLEM!!!...
Alborosie

Answer:

answer is 0

Step-by-step explanation:

-4x * y * 0 lets go for x 1  y 1

-4 * 1 * 0

-4 * 0

0

4 0
4 years ago
Calculate the volume of each cylinder.<br><br> enter your answers in the table.
Aneli [31]
The first one is about 226.194ft the second one is 452.389 ft
6 0
3 years ago
Read 2 more answers
Solve 3-²<br>I need work shown​
skelet666 [1.2K]

\huge\text{Hey there!}

\large\text{Equation: }\bold{3^{-2}}

\large\text{Lets convert }\bold{3^{-2}}\large\text{ into }\bold{3^2}\large\text{ temporarily...}

\large\text{Equation:} \bold{\dfrac{1}{3^2}}\\\\\bold{= \dfrac{1}{3\times3}}\\\\\bold{3\times3\rightarrow9\leftarrow\ solving\ for\ your\ DENOMINATOR\ (bottom\ number)}\\\\\bold{= \dfrac{1}{9}}\\\\\boxed{\boxed{\large\text{Answer: }\bold{\dfrac{1}{9}}}}\huge\checkmark

\textsf{Good luck on your assignment and enjoy your day!}

~\frak{Amphitrite1040:)}

3 0
3 years ago
Write the ratio as a fraction: 2 1/3 : 4 1/2
chubhunter [2.5K]
7/3 and 9/2 
Hope this helps!
And please thank me by pressing the 'Thank You' button :) ^.^

4 0
3 years ago
Calculate the midpoint of the line segments joining the two points (-8, -7) and (4,9)
dmitriy555 [2]

Answer:

Step-by-step explanation:

To calculate the midpoint, you need to plug in the values of x and y into the midpoint formula.

M ( x1 + x2/2 , y1 + y2/2)

M [ -8 + 4/2 , -7 + 9/2]

M ( -2, 1)  

3 0
3 years ago
Other questions:
  • What is the lcm of two numbers if one number is a multiple of the other. Give an example
    14·1 answer
  • Graph the line using a point and a slope. Write the equation of each line.
    8·2 answers
  • What are three equivalent ratios for 18/6, 5/45, and 3/5?
    12·2 answers
  • A moving company needs to replace a circualr glass mirror that it broke during a move. The dimensions of a piece of the broken m
    12·1 answer
  • Solve the initial value problem: 9y′′−6y′+8y=0, y(π/2)=−2, y′(π/2)=−1. Give your answer as y=... . Use x as the independent vari
    15·1 answer
  • I want to know the answers
    6·1 answer
  • PLEASE ASAP HELP WITH LETTER f
    12·1 answer
  • ? Divided by 3/8 = 16/15
    12·2 answers
  • Prove that:
    9·2 answers
  • PLS HELPP
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!