Question

The probability that a person owns a smartphone in the U.S. is 82%. A) the probability...

The probability that a person owns a smartphone in the U.S. is 82%.

A) the probability that of the next 45 people that exactly 39 own a smart phone.

B) the probablity that of the next 45 people that 30 or less (x≤30) do not own a smart phone.

C) the probability that of the next 45 people that 35 or more (x≥35) own a smart phone

D) the probability that of the next 45 people that between 30 and 37(30≤x≤37)own a smart phone.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
10.   Smartphone usage among people fifty-five (55) years and older has increased                 over the last...
10.   Smartphone usage among people fifty-five (55) years and older has increased                 over the last several years. It is now reported that 35% (.35) of people over the age of                 55 own a smartphone. Ten (10) persons 55 or over were asked at a local mall if they                 owned a smartphone. What is the probability that:                            a. No more than two (2) people owned a smartphone?                            b. Exactly one (1) person owned a smartphone?                           ...
Close to 45% of smartphone users say they upgrade their phone every 2 years. In a...
Close to 45% of smartphone users say they upgrade their phone every 2 years. In a random sample of 60 smartphone users, what is the probability that a. more than 35 smartphone users upgrade their phone every 2 years? b. at least 20 smartphone users upgrade their phone every 2 years? c. no more than 30 smartphone users upgrade their phone every 2 years? Answers are a) .0139 b) 0.9754 c).8183 need to understand why and see the formula
In a? region, there is a 0.8 probability chance that a randomly selected person of the...
In a? region, there is a 0.8 probability chance that a randomly selected person of the population has brown eyes. Assume 12 people are randomly selected. Complete parts? (a) through? (d) below. a. Find the probability that all of the selected people have brown eyes. The probability that all of the 12 selected people have brown eyes is. ?(Round to three decimal places as? needed.) b. Find the probability that exactly 11 of the selected people have brown eyes. The...
In a​ region, there is a 0.9 probability chance that a randomly selected person of the...
In a​ region, there is a 0.9 probability chance that a randomly selected person of the population has brown eyes. Assume 15 people are randomly selected. Complete parts​ (a) through​ (d) below. a. Find the probability that all of the selected people have brown eyes. The probability that all of the 15 selected people have brown eyes is 0.205. ​(Round to three decimal places as​ needed.) b. Find the probability that exactly 14 of the selected people have brown eyes....
In the U.S. 14% of people use their cell phones to access the internet. You select...
In the U.S. 14% of people use their cell phones to access the internet. You select a random sample of 10 people. a. Determine the probability that exactly two use their cell phones to access the internet. b. Determine the probability that at most two use their cell phones to access the internet. c. Determine the probability that two or more use their cell phones to access the internet. d. Determine the probability at least one uses their cell phone...
5. The probability of a person getting the flu this year is 0.15. If we have...
5. The probability of a person getting the flu this year is 0.15. If we have a group of 20 compute the following. (10 points) a. Standard deviation __1.60______ b. Probability that 2 people have the flu ___0.229_____ c. Probability that less than 4 people have the flu ____0.648____ d. Probability that at least one person has the flu ____0.961____ e. Probability that at least 3 people have the flu ____0.595____ f. A normal distribution of has a mean of...
B. Determine whether or not the table is a valid probability distribution of a discrete random...
B. Determine whether or not the table is a valid probability distribution of a discrete random variable. Explain fully. X 0.23 0.14 0.17 P(X=x) -0.22 0.38 0.84 Daily sales of a medium sized restaurant are normally distributed with a mean of $720 and a standard deviation of $80. What is the probability that a randomly selected day will make a sales of at least $656? What is the probability that a randomly selected day will make a sales between $680...
You call the Treasury trying to solve your problem with the payment of the economic incentive....
You call the Treasury trying to solve your problem with the payment of the economic incentive. The time that you have to let the phone ring to be answered follows an exponential distribution with an average of 35 minutes. a) If your next virtual meeting is in 20 minutes, what is the probability that they will answer your call before you have to hang up? b) If you spent 40 minutes on the phone yesterday and you did not get...
The amount of weight gained by a person during their first semester of college uniformly distributed...
The amount of weight gained by a person during their first semester of college uniformly distributed between 7 and 39 lbs. The random variable X measures the amount of weight a randomly selected person gains during their first semester of college. A) State the distribution of the random variable defined above B) Compute the probability that a randomly selected person gains more than 30 lbs during their first semester of college C) Compute the probability that a randomly selected person...
A company surveyed 1000 people on their age and the number of jeans purchased annually. The...
A company surveyed 1000 people on their age and the number of jeans purchased annually. The results of the poll are shown in the table. Jeans Purchased Annually 0 1 2 3 or More Total Under 12 0     79     62         39   180 12-18 17     83     101         59   260 19-25 35     54     159         52   300 over 25 37     71     139         13   260 Total 89     287     461         163   1000 A person is selected at random. Compute the probability of the following. (a)...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT