8,971 Answered Questions for the topic statistics
Statistics
03/25/22
Normal Distribution and Percentages
The graph illustrates a normal distribution for the prices paid for a particular model of HD television. The mean price paid is $1800 and the standard deviation is $85.What is the approximate...
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PLEASE help with statistical probability questions!
In a math class with 19 students, a test was given the same day that an assignment was due. There were 11 students who passed the test and 14 students who completed the assignment. There were 3...
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PLEASE help with statistical probability questions!
In a math class with 19 students, a test was given the same day that an assignment was due. There were 11 students who passed the test and 14 students who completed the assignment. There were 3...
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please help me with statistical probability question!
Age 20-29
Age 30-39
Age 40-49
Age 50 & over
Total
High school only
946
1118
369
1010
3443
Some college
1088
1277
566
2106
5037
Bachelor's degree
646
1045
472
2083
4246
Master's...
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Please help with statistical probability questions
In a certain Algebra 2 class of 30 students, 16 of them play basketball and 8 of them play baseball. There are 12 students who play neither sport. What is the probability that a student chosen...
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help with statistical probability
In a class of 25 students, 17 have a cat and 7 have a dog. There are 5 students who have a cat and a dog. What is the probability that a student who has a cat also has a dog?
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help with statistical probability
Age 20-29
Age 30-39
Age 40-49
Age 50 & over
Total
High school only
1413
661
799
602
3475
Some college
2237
562
1193
1185
5177
Bachelor's degree
1062
1391
1187
1732
5372
Master's...
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help with probability and statistics
There is a spinner with 10 equal areas, numbered 1 through 10. If the spinner is spun one time, what is the probability that the result is a multiple of 2 and a multiple of 5?
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please help with these maht statistical probabilty questions
Plays an instrument
Does not play an instrument
Plays a sport
5
2
Does not play a sport
4
12
In a class of students, the following data table summarizes how many students play an instrument...
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please help with this math probability statistical question
Has a brother
Does not have a brother
Has a sister
2
3
Does not have a sister
10
7
In a class of students, the following data table summarizes how many students have a brother or a sister....
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A 90% confidence intervals for the proportion...
A 90% confidence intervals for the proportion of first-year statistics students with brown hair is given to be (0.25, 0.41).(a) What is the sample proportion of students with brown hair? (Round to...
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Statistics
03/24/22
Standard Normal Distribution
For a standard normal distribution, find:P(z < -1.19)
Statistics
03/24/22
Exponential distribution
The average time between accidents in a factory is 7 weeks.Find the probability that more than 21 weeks pass between accidents.
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03/24/22
Find the standard deviation in volumes of quart-size Hellmann's mayonnaise jars.
The actual volumes of quart-size jars of Hellmann's mayonnaise are uniformly distributed from 31.43 to 32.5 fluid ounces. Find the standard deviation in volumes of quart-size Hellmann's mayonnaise...
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Statistics
03/23/22
Statistical Math
NBA Player Stephen Curry has a better free throw percentage than the average forall NBA players. Based on his free throw percentage of 90.7%, the following bar graph displays the possible values of...
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Statistics
03/23/22
stats i need help asap
Assume that adults have IQ scores that are normally distributed with a mean of 101.6 and a standard deviation 21.9. Find the first quartile Q,, which is the IQ score separating the bottom 25% from...
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Statistics Math
03/23/22
I don't understand how to solve this. Can someone help me step by step?
A newspaper conducted a statewide survey concerning a proposal to raise taxes in order to prevent budget cuts to education. The newspaper took a random sample (assume it is an SRS) of 500...
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A local five-star restaurant asks its patrons to fill out a quick satisfaction survey (is the patron satisfied or not) after their meal
A local five-star restaurant asks its patrons to fill out a quick satisfaction survey (is the patron satisfied or not) after their meal, and the restaurant claims that their satisfaction rating is...
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Statistics
03/23/22
statistics problems
The area between z = −2.26 and z = 1.32 is
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03/23/22
The average weight of 25 chocolate bars selected from a normally distributed population is 200 grams with a standard deviation of 10 grams.
The average weight of 25 chocolate bars selected from a normally distributed population is 200 grams with a standard deviation of 10 grams. Find the point estimate and the confidence interval...
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Statistics Probability
03/23/22
Find P61 find the value and sample mean
A population of values has a normal distribution with μ=245.2μ=245.2 and σ=48.8σ=48.8. You intend to draw a random sample of size n=84n=84. Please answer the following questions, and show your...
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Statistics Probability
03/23/22
find probability
A leading magazine (like Barron's) reported at one time that the average number of weeks an individual is unemployed is 30 weeks. Assume that the length of unemployment is normally distributed with...
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Statistics Probability
03/23/22
A population of values has a normal distribution with μ=208.5μ=208.5 and σ=94.8σ=94.8. You intend to draw a random sample of size n=85n=85.
A population of values has a normal distribution with μ=208.5μ=208.5 and σ=94.8σ=94.8. You intend to draw a random sample of size n=85n=85. Please show your answers as numbers accurate to 4 decimal...
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Statistics Probability
03/22/22
Help me please its urgent
A fast food chain store conducted a taste survey before marketing a new hamburger. The results of the survey showed that 75% of the people who tried this hamburger liked it. Encouraged by this...
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Statistics Probability
03/22/22
In a Pet Club, 23 members have a dog, 37 members have a cat, 5 members have a hamster, and 10 members have a bird. What percentage of Pet Club members have a cat or a hamster?
In a Pet Club, 23 members have a dog, 37 members have a cat, 5 members have a hamster, and 10 members have a bird. What percentage of Pet Club members have a cat or a hamster? (Assume that each...
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