Statistics
posted by Brittany .
A study shows that 10% of americans are lefthanded.
Find the probability that at most one student is left handed in a class of 20 students.

P(x)=.10
"at most" means "binomialCDF" on calculator.
1 student is upper value, 0 is lower value.
n=20 or number of trials.
ANSWER: CDF=.39 or ~39% that at most one student is left handed in a class of 20 students.
Respond to this Question
Similar Questions

Statistics
Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is lefthanded. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are … 
Math check answer
Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is lefthanded. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are … 
math check
Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is lefthanded. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are … 
Statistics help
Suppose that you are in a class of 32 students and it is assumed that approximately 9% of the population is lefthanded. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are … 
Stats
Suppose that you are in a class of 31 students and it is assumed that approximately 10% of the population is lefthanded. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are … 
STATISTICS
Suppose that you are in a class of 29 students and it is assumed that approximately 16% of the population is lefthanded. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are … 
Math statistics
Ten percent of Americans adults are lefthanded. A statistics class has 50 students in attendance. Find the standard deviation for the number of lefthanded students in such classes of 50 students 
Statistics
In a certain class 27% of the students are lefthanded. suppose that a random sample of 53 students is selected. Find the mean number of lefthanded students in the class. Round your answer to the nearest integer. 
Statistics
In a certain class 27% of the students are lefthanded. suppose that a random sample of 53 students is selected. Find the mean number of lefthanded students in the class. Round your answer to the nearest integer. Pls help! 
statistics
Suppose that you are in a class of 28 students and it is assumed that approximately 8% of the population is lefthanded. (Give your answers correct to three decimal place. Compute the probability that exactly five students are lefthanded