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
bagirrra123 [75]
3 years ago
5

"A movie data base claims that the average length of movies is 117 minutes. A researcher collected a random sample of 160 movies

released during 2010–2015. The mean length of those movies is 118.44 minutes and the standard deviation is 8.82. The researcher wonders if the actual mean length of movies released during 2010-2015 is more than the data base value and wants to carry out a hypothesis test. What are the null and alternative hypothesis?"
Mathematics
1 answer:
Sergeu [11.5K]3 years ago
3 0

Answer:

We need to conduct a hypothesis in order to check if the mean the actual mean length of movies released during 2010-2015 is more than the data base value (a;ternative hypothesis) ,so then the system of hypothesis would be:  

Null hypothesis:\mu \leq 117  

Alternative hypothesis:\mu > 117  

Step-by-step explanation:

Data given and notation  

\bar X=118.44 represent the sample mean

s=8.82 represent the sample standard deviation

n=160 sample size  

\mu_o =117 represent the value that we want to test

\alpha represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean the actual mean length of movies released during 2010-2015 is more than the data base value (a;ternative hypothesis) ,so then the system of hypothesis would be:  

Null hypothesis:\mu \leq 117  

Alternative hypothesis:\mu > 117  

You might be interested in
A train leaves at 12.13 and arrives at its destination at 13.03. If the train travelled 83 km, what was it's average speed in km
Mama L [17]

Answer:

1.7km/h

Step-by-step explanation:

speed is distance over time,the time difference is 50 min and the distance is 83,you divide 83 by 50 to give you the answer

3 0
3 years ago
In the figure shown, △BAC ≅ △EDF what is the value of x?
NISA [10]

Step-by-step explanation:

△BAC ≅ △EDF (given)

Therefore,

BC=EF

x-4=19

x=23

4 0
3 years ago
Is three quarters of earths water salt water?
aivan3 [116]
The Earth is a watery place. But just how much water exists on, in, and above our planet? About 71 percent of the Earth's surface is water-covered, and the oceans<span> hold about 96.5 percent of all Earth's water. Water also exists in the air as </span>water vapor<span>, in </span>rivers<span> and </span>lakes<span>, in icecaps and </span>glaciers<span>, in the ground as soil moisture and in </span>aquifers<span>, and even in you and your dog.</span>
6 0
3 years ago
Read 2 more answers
Which expression is equivalent to<br> 3(1 + x) + 7?<br> Ax+-7<br> B) X + 10<br>C)3×+7<br>D)3×+10​
AlladinOne [14]

Answer: D

Step-by-step explanation:

3(1+x)+7 = 3+3x+7 =3x+10

6 0
2 years ago
Read 2 more answers
How do I solve -2(x+1)=-8x+1
mylen [45]
-2 (x+1)= -8x+1
-2x-2= -8x+1
+2x. +2x
-2= -6x+1
-1. -1
-3= -6x
÷-6
x=.5

X=0.5
4 0
3 years ago
Other questions:
  • Which of the following is an equation of a line parallel to the equation y=4x+1?
    15·1 answer
  • Multiply −2x(6x^4−7x^2+x−5)
    5·1 answer
  • how do the graphs of f(x) = sin x and g(x) = sin2x+3 compare. Must make two selections of the following that apply.
    13·2 answers
  • Which shape is not always a parallelogram?
    12·1 answer
  • I don’t know what to do
    12·2 answers
  • The city council is planning a long, narrow park with a playground at one end and a fountain at the other. They want the playgro
    13·1 answer
  • (BRAINIEST AND 7 POINTS !) One year ago Derek joined a health club. He paid a yearly membership fee of $28 that covered all the
    9·2 answers
  • Help ASAP pleaseeee...
    11·1 answer
  • Joe bought a television that was on sale for 20% off. He paid $160.00 for it. What was the original price?
    6·1 answer
  • Find the area of given shape.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!