![masonvinyard02p83vua](/avatars/5129.jpg)
masonvinyard02p83vua
28.10.2020 •
Mathematics
g You believe that the mean life is actually less than the 100 hours the company claims. You decide to collect data on the average battery life (in hours) of a random sample and obtain the following information: the sample mean is 98.5, the standard error of the mean is 0.777 and the number of observations is 20. What can you conclude:
Solved
Show answers
More tips
- H Health and Medicine 10 Ways to Cleanse Your Colon and Improve Your Health...
- W Work and Career How to Write a Resume That Catches the Employer s Attention?...
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
Answers on questions: Mathematics
- M Mathematics Find the perimeter of squared garden if its area is 1369m2...
- M Mathematics If the distance of P x, y from the points A (3, 6) and B −3, 4 are equal, prove that 3x + y = 5...
- M Mathematics Problem 1 State whether each sequence is arithmetic and justify your answer. 1.1, 1.5, 1.9, 2.3, 2.7, ... Yes No...
- M Mathematics If 6,10, x 40 are in proportion, find the value of x....
- M Mathematics The equation of 2 straight lines that are parallel to each other are defined 4x + py =5 and 2x - 5y -6=0. calculate for p. byP(-3,5)Q (0,3)R (h,-3)PQR is straight line ii.find...
- M Mathematics Temperature can be measured in degrees Celsius (°C). A temperature of 0°C is the freezing point of water. Which statements are true? Select all correct answers. A temperature...
- M Mathematics Solve the system by substitution. 9x+y= 9x+y= \,\,21 21 -x-3= −x−3= \,\,y y...
- M Mathematics Ang aking mahalagang natutunan sa nakaraang kwarter ay mga...
- M Mathematics Which pack of towles and containers of shampoo should Toni and her friends choose...
- M Mathematics Use the figure to answer the question that follows: Segments UV and WZ are parallel with line ST intersecting both at points Q and R respectively When written in the correct...
Ответ:
The mean life is actually less than the 100 hours the company claims.
Step-by-step explanation:
In this case we need to test whether the mean life is actually less than the 100 hours the company claims.
The information provided is:
The hypothesis for the test can be defined as follows:
H₀: The mean life 100 hours, i.e. μ = 100.
Hₐ: The mean life is actually less than the 100 hours, i.e. μ < 100.
Assume the significance level as 5%.
As the population standard deviation is not known we will use a t-test for single mean.
Compute the test statistic value as follows:
Compute the p-value of the test as follows:
*Use a t-table.
Thus, the p-value of the test is 0.034.
Decision rule:
If the p-value of the test is less than the significance level then the null hypothesis will be rejected and vice-versa.
p-value = 0.034 < α = 0.05
The null hypothesis will be rejected at 5% level of significance.
Thus, concluding that the mean life is actually less than the 100 hours the company claims.
Ответ:
34 feet = 11.333333 yards
or
11 yards and 0.9999 feet
Step-by-step explanation: