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
Varvara68 [4.7K]
3 years ago
11

It is believed that a stock price for a particular company will grow at a rate of $5 per week with a standard deviation of $1. A

n investor believes the stock won’t grow as quickly. The changes in stock price is recorded for ten weeks and are as follows: $4, $3, $2, $3, $1, $7, $2, $1, $1, $2. Perform a hypothesis test using a 5% level of significance. What is the p-value?
Mathematics
1 answer:
IgorLugansk [536]3 years ago
7 0

Answer:

Step-by-step explanation:

We would set up the hypothesis test. This is a test of a single population mean since we are dealing with mean

For the null hypothesis,

µ = $5

For the alternative hypothesis,

µ < $5

number of samples taken = 10

Sample mean, x = (4 + 3 + 2 + 3 + 1 + 7 + 2 + 1 + 1 + 2)/10 = 2.6

To determine sample standard deviation, s

s = √(summation(x - mean)/n

n = 12

Summation(x - mean) = (4 - 2.6)^2 + (3 - 2.6)^2 + (2 - 2.6)^2 + (3 - 2.6)^2 + (1 - 2.6)^2 + (7 - 2.6)^2 + (2 - 2.6)^2 + (1 - 2.6)^2 + (1 - 2.6)^2 + (2 - 2.6)^2 = 30.4

s = √30.4/10 = 1.74

Since the number of samples is 10 and no population standard deviation is given, the distribution is a student's t.

Since n = 10,

Degrees of freedom, df = n - 1 = 10 - 1 = 9

t = (x - µ)/(s/√n)

Where

x = sample mean = 2.6

µ = population mean = 5

s = samples standard deviation = 1.74

t = (2.6 - 5)/(1.74/√10) = - 4.36

We would determine the p value at alpha = 0.05. using the t test calculator. It becomes

p = 0.000912

You might be interested in
Select the correct answer. What is the opposite of ? A. B. C. D. E.
Helga [31]

Answer: what are the options?

Step-by-step explanation:

7 0
2 years ago
If hose A fills a bucket in 45 minutes and hose B fills the same bucket in 30 minutes, how long will it take both hoses to fill
slamgirl [31]

Answer:

It should take around 15 minutes

Step-by-step explanation:

3 0
3 years ago
Which inequality correctly orders the numbers -5,-3, and 2 from greatest to least?
lozanna [386]

Answer:

1) 2 > -3 > -5

Step-by-step explanation:

that is mathematically correct

8 0
2 years ago
Read 2 more answers
What is the answer to this question it is urgent
UkoKoshka [18]

Answer: the answer is D

Step-by-step explanation: may i please have brainliest.

4 0
2 years ago
Read 2 more answers
The sum of two numbers is 51 and the difference is 11. what are the numbers?
stiv31 [10]

(51 - 11) : 2 = 20

20 + 11 = 31


20 and 31

6 0
3 years ago
Other questions:
  • ANSWER ASAP PLEASE
    10·1 answer
  • What is the value of x if 5x+2 = 59?<br> Ox=-11<br> ох=-7<br> 0 х=7<br> Ox= 11
    7·2 answers
  • Draw a triagle with 3 lines
    7·1 answer
  • At a school the number of boys : number of girls = 11 : 9.
    5·2 answers
  • Find the slope<br> y = -1+ 3x?
    7·2 answers
  • Which is a not a triangle ?
    13·1 answer
  • Check all that apply. π/3 is the reference angle for: <br>A.7π/3<br>B.19π/3<br>C.2π/3<br>D.15π/3​
    6·1 answer
  • Use Pythagorean theorem to solve the following right triangles, put your answer in simplest radical form:
    11·1 answer
  • Kara wants to make a histogram of the number of students who wear blue shirts in her class throughout the week. She gathered the
    5·1 answer
  • Write the equation of the trigonometric graph.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!