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
velikii [3]
2 years ago
5

Data from the Office for National Statistics show that the mean age at which men in Great Britain get married was 33.0. A news r

eporter noted that this represents a continuation of the trend of waiting until a later age to wed. A new sample of 47 recently wed British men provided their age at the time of marriage. These data are contained in the Excel Online file below. Construct a spreadsheet to answer the following questions. Open spreadsheet Do these data indicate that the mean age of British men at the time of marriage exceeds the mean age in 2013? Test this hypothesis at . What is your conclusion? Use the obtained rounded values in your calculations. Sample mean: 33.11 years (to 2 decimals) Sample standard deviation: 4.7468 years (to 4 decimals) -value: 0.154 (to 3 decimals) -value: (to 3 decimals) Because -value , we . There is evidence to conclude that the mean age at which British men get married exceeds what it was in 2013. Excel giving me wrong p value.
Find me the P- Value
Data set
25
30
30
33
34
34
38
37
29
39
30
29
37
26
30
34
39
26
28
34
35
40
25
35
37
31
35
25
40
40
32
34
35
28
38
37
39
31
37
37
39
34
39
30
25
29
27
Mathematics
1 answer:
DerKrebs [107]2 years ago
7 0

Answer:

The solution to these question can be defined as follows:

Step-by-step explanation:

H_0: \mu = 33 \ versus\\\\ H_a: \mu > 33\\\\\bar{X} = 33.11\\\\S = 4.7468\\\\n = 47\\\\df = n - 1 = 46\\\\\alpha = 0.05\\\\

Testing statistic:

t = \frac{(\bar{X} - \mu)}{[\frac{S}{\sqrt{(n)}}]}

= \frac{(33.11 – 33)}{\frac{4.7468}{\sqrt{47}}}\\\\= \frac{0.11}{0.6924}\\\\= 0.1589\\\\P-value = 0.4372\\\\P-value > \alpha = 0.05

Therefore the null hypothesis we do not deny, it is not clear enough so that the median age once British men get engaged is higher than in 2013.  

You might be interested in
If r(x)=3x-1 and s(x)=2x+1, which expression is equivalent to (r/s)(6)
Veseljchak [2.6K]

Answer:

Step-by-step explanation:

7 0
3 years ago
TUI Reiru makes necklaces like the one in the
marta [7]

Answer:

wheres the picture

Step-by-step explanation:

4 0
3 years ago
Simplify the Absolute value of 120+x , if x<−120
Brilliant_brown [7]

Answer:

<h2>|120 + x| = -x - 120 for x < -120</h2>

Step-by-step explanation:

|120+x|=\left\{\begin{array}{ccc}120+x&for&x\geq-120\\-(120+x)&for&x

3 0
3 years ago
The Montanez family is a family of four people. They have used 3,485.78 gallons of water so far this month. They cannot exceed 7
faust18 [17]

Answer: yes

Step-by-step explanation:

this month 3485.78/4 = 871.445 gallons per person

Drought month 7250.50/4 = 1812.625

difference 7250.50 - 3485.78 = 3764.72

8 0
3 years ago
A university interested in tracking its honors program believes that the proportion of graduates with a GPA of 3.00 or below is
stealth61 [152]

Answer:

a) On this case we are interested on the population proportion of students that have a GPA of 3.00 or below.

b) z=\frac{0.15 -0.2}{\sqrt{\frac{0.2(1-0.2)}{200}}}=-1.77  

p_v =P(z  

c) Null hypothesis:p\geq 0.2  

Alternative hypothesis:p  

d) The significance level provided is \alpha=0.05. If we compare the  p value obtained and the significance level given \alpha=0.05 we have p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the population proportion of students that have a GPA of 3.00 or below is significantly lower than 0.2.  

Step-by-step explanation:

Data given and notation n  

n=200 represent the random sample taken

X=30 represent the  students with a GPA of 3.00 or below.

\hat p=\frac{30}{200}=0.15 estimated proportion of  students with a GPA of 3.00 or below.  

p_o=0.2 is the value that we want to test

\alpha represent the significance level  

z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

a. In testing the university's belief, how does on define the population parameter of interest?

On this case we are interested on the population proportion of students that have a GPA of 3.00 or below.

Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that the proportion of graduates with GPA of 3.00 or below is less than 0.2.:  

Null hypothesis:p\geq 0.2  

Alternative hypothesis:p  

When we conduct a proportion test we need to use the z statistic, and the is given by:  

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

The One-Sample Proportion Test is used to assess whether a population proportion \hat p is significantly different from a hypothesized value p_o.

b. The value of the test statistics and its associated p-value are?

Since we have all the info requires we can replace in formula (1) like this:  

z=\frac{0.15 -0.2}{\sqrt{\frac{0.2(1-0.2)}{200}}}=-1.77  

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.  

Since is a one left tailed test the p value would be:  

p_v =P(z  

c. In testing the university's belief, the appropriate hypothesis are?

Null hypothesis:p\geq 0.2  

Alternative hypothesis:p  

d. At a 5% significance level, the decision is to?

The significance level provided is \alpha=0.05. If we compare the  p value obtained and the significance level given \alpha=0.05 we have p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the population proportion of students that have a GPA of 3.00 or below is significantly lower than 0.2.  

5 0
3 years ago
Other questions:
  • I need help with how I can write an equation involving absolute value. It's for my little brother
    7·1 answer
  • in one day a movie store rented out 20 comedies. if the ratio of comedies rented to action movies rented was 4:3, how many actio
    12·2 answers
  • Which describes the amount of product a seller is able to make?
    15·1 answer
  • Find the exact roots of x^2+10x-8=0 by completing the square
    13·1 answer
  • Write two expressions<br> where the solution is 19.
    6·2 answers
  • For the wheat-yield distribution of Exercise 4.3.5, find
    13·1 answer
  • 2x - 1y = 6<br> -3y = -6x + 18<br><br> please explain how you got your answer thank you :)
    5·2 answers
  • The length of a TV is 16/9 times the width. The length of Mrs. Hoang's new TV is 32. What is the width?
    13·1 answer
  • If 32*937 is divisible by 3 , which smallest digit can be replaced in * place ?​
    14·2 answers
  • A cash card has a starting value of $25. If the card is not used within the first year of its purchase, the value on the card be
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!