a) X is the random variable that shows the number of left handed people out of 15
b) X~ Binomial ( n=15, p=0.1)
c) Histogram -
d) The Histogram is right skewed.
e) Mean= np = 15 * 0.1 = 1.5
f) Variance= np(1-p) = 15 * 0.1 *(1-0.1) = 1.35
g) Standard deviation= =
5.3.4 Approximately 10% of all people are left-handed. Consider a grouping of fifteen people. a.) State...
Approximately 10% of all people are left-handed. Consider a grouping of fifteen people. (5.3.4) a) State the random variable. b) Write the probability distribution. c) Draw a histogram. d) Describe the shape of the histogram. e) Find the mean. f) Find the variance. g) Find the standard deviation.
Approximately 10% of all people are left-handed. Consider a grouping of fifteen people. Find the probability that: a) None are left-handed; b) At least seven are left-handed. 6.
Approximately 10% of all people are left-handed ("11 little-known facts," 2013). Consider a grouping of fifteen people. e.) At least two are left-handed. f.) At most three are left-handed. g.) At least seven are left-handed. h.) Seven of the last 15 U.S. Presidents were left-handed. Is this unusual? What does that tell you?
Approximately 10% of people in the world are left-handed, so P(a person is left handed) = 0.1. Suppose we have a class of 15 people and UHD is interested in how many left-handed desks the class will need, so we define a random variable X, the number of left-handed people in the class. 1. What distribution family does this situation belong to? What is (are) the parameter(s)? 2. What is the probability that none of the students will be left...
In a survey of 300 people, approximately 15% of the people identified themselves as being left-handed. What are the mean, standard deviation, and shape of the distribution of thesample proportion p-hat of respondents who say they are left-handed? (3 points) Using the normal approximation without the continuity correction, sketch theprobability distribution curve for the distribution of p-hat. Shade equal areas onboth sides of the mean to show an area that represents a probability of .95,and label the upper and lower...
In a survey of 300 people, approximately 15% of the people identified themselves as being left-handed. What are the mean, standard deviation, and shape of the distribution of thesample proportion p-hat of respondents who say they are left-handed? (3 points) Using the normal approximation without the continuity correction, sketch theprobability distribution curve for the distribution of p-hat. Shade equal areas onboth sides of the mean to show an area that represents a probability of .95,and label the upper and lower...
The proportion of left-handed people in the general population is about 0.1. Suppose a random sample of 225 people is observed. The proportion of left-handed people in the general population is about 0.1. Suppose a random sample of 225 people is observed. Using our 'rule of thumb; can we use normal approximation values for this sampling distribution? Yes + np = 22.5 and ng= (Click to view hint) What is the mean of the sample proportion? др (Click to hide...
Assume that 15% of people are left-handed. Suppose 16 people are selected at random. Answer each question about right-handers below. a) Find the mean and standard deviation of the number of right-handers in the group. b) What's the probability that they're not all right-handed? c) What's the probability that there are no more than 10 righties? d) What's the probability that there are exactly 7 of each? e) What's the probability that the majority is right-handed?
8) Assume that 15?% of people are? left-handed. Suppose 14 people are selected at random. Answer each question about? right-handers below. a)find the mean and standard deviation of the number of right-handers in the group. b)what's the probability that they're not all right-handed? c)what's the probability that there are no more than 8 righties? d)what's the probability that there are exactly 6 of each?
fouTube Maps Your Turn The proportion of left-handed people in the general population is about 0.1. Suppose a random sample of 225 people is observed Using our "rule of thumb." can we use normal approximation values for this sampling distribution? No • * * and nq = 98 * (Click to view hint) What is the mean of the sample proportion? * (Click to view hint) np = 7 My = 768 What is the standard error? = 76 *...