rosiegirl313
13.07.2019 •
Mathematics
Ineed doing this can somebody ? ! it’s number 2.
Solved
Show answers
More tips
- F Food and Cooking Discover How to Properly Prepare Dough for Rasstegai...
- P Philosophy Unidentified Flying Object - What is the Nature of this Phenomenon?...
- F Family and Home Protect Your Home or Apartment from Pesky Ants...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- F Food and Cooking How to Get Reconfirmation of Registration?...
- C Computers and Internet How to Get Rid of Spam in ICQ?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
Answers on questions: Mathematics
- M Mathematics Fill in the boxes?? Thank youuu...
- M Mathematics PLS HELP ME HURRY PLS I NEED THIS 4. The dot plot shows the number of miles Alex skated each day over two months: Which statement is best supported by the dot plot? Choose...
- M Mathematics Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest...
- M Mathematics I NEED THIS TO PASS PLEASE...
- M Mathematics The tobacco industry closely monitors all surveys that involve smoking. One survey showed that among 785 randomly selected subjects who completed 4 years of college,...
- M Mathematics [12 points] Determine whether or not each of the following statements is correct. [3 points each] (a) The value of the test statistic does not lie in the rejection region....
- M Mathematics Circle P has a circumference of approximately 75 inches. What is the approximate length of the radius, n Use 3.1 for me. Round to the nearest inch. 12 inches 24 inches...
- M Mathematics A number plus 12 is no more than 8...
- M Mathematics On September 10 in midstate New Hampshire the temperature at 6 AM was 45°F at 2 PM on the same day the temperature was 77°F find the average rate of change in temperature...
- M Mathematics Cakes was 6. What was Maya sold cupcakes in her neighborhood. The cost of preparing the cupcakes $5.39. The money she received from the sale of the cupcakes was $24.00....
Ответ:
Ответ:
a) 33.33%)
b) 135 minutes
c) 8.66 min
d) 50%
Step-by-step explanation:
a) the probability for a uniform distribution is
P(b<X<a) = (a-b)/(c-d) , where c and d are the maximum and minimum values
therefore the probability that the flight is more than 140 minutes ( and less than 150 since it is the maximum value)
P(140<X<150) = (a-b)/(c-d) = (150-140)/(150-120) = 10/30 = 1/3 (33.33%)
b) the mean (expected value) for a uniform probability distribution is
E(X) = (c+d)/2 = (120+150)/2 = 135 minutes
c) the standard deviation for a uniform probability distribution is
σ²(X)= (c-d)²/12 = (150-120)²/12 = 75 min²
σ = √75 min² = 8.66 min
b) following the same procedure as in a)
P(120<X<135) = (a-b)/(c-d) = (135-120)/(150-120) = 15/30 = 1/2 (50%)