In a survey of 169 people, the following data were obtained relating gender to color-blindness:   Color-Blind (C) Not Color - Blind \overline C Total Male (M) 63 48 111 Female (F) 21 37 58 Total 84 85 169A person is randomly selected. What is the probability that the person is: a) Male?  11/69   b) Male and Color-blind?  63/169   c) Male given that the person is Color-blind?  63/111

Please no written by hand solutions Printed circuit cards are placed in a functional test after being populated with semiconductor chips. A lot contains 140 cards, and 20 are selected without replacement for functional testing. a) If 20 cards are defective, what is the probability that at least 1 defective card is in the sample? b) If 5 cards are defective, what is the probability that at least 1 defective card appears in the sample? c) Calculate the mean and variance of the number of defectives in the sample when 5 cards are defective?

An investigator is interested in examining if drinking wells are contaminated with a toxin, the toxin is found in 29% of the wells within the region. 7 drinking wells were examined, they have selected the 7 wells so they are far enough apart from one another so the results of one drinking well provides no information as to the status of any other well in the study. a) What is the probability that exactly 3 of the wells in the study are contaminated. b) What is the mean and standard deviation of the number of drinking wells in a sample of this size that are contaminated.

In a survey of 169 people, the following data were obtained relating gender to color-blindness:   Color-Blind (C) Not Color - Blind \overline C Total Male (M) 68 49 117 Female (F) 26 26 52 Total 94 75 169   A person is randomly selected. What is the probability that the person is: a) Male?  0.6923   b) Male and Color-blind?  0.4024   c) Male given that the person is Color-blind?

The denver post reported that a recent audit of Los Angeles 911 calls showed that 85% were not emergencies. Suppose the 911 operators in Los Angeles have just received 4 calls. a) what is the probability that all four calls are, in fact, emergencies ? (Round answer to five decimal places) b) what is the probability that two or more calls are not emergencies? (Round to five decimal places) c) what is the smallest number of calls that the 911 operators need to answer to be at least 93% or more sure that at least one call is an emergency? (Round to whole number)

A national survey found that 42​% of adults ages​ 25-29 had only a cell phone and no landline. Suppose that five 25-29-year-olds are randomly selected.        ​a) What is the probability that all of these adults have only a cell phone and no​ landline? (Round to four decimal places as needed)

Eleven percent of American children (ages 4 to 17) have Attention Deficient Hyperactivity Disorder (ADHD) according to the Center for Disease Control. Suppose six American children in this age group are randomly selected, is the probability that at least one has ADHD unusual? Eleven percent of American children (ages 4 to 17) have Attention Deficient Hyperactivity Disorder (ADHD) according to the Center for Disease Control. Suppose six American children in this age group are randomly selected, is the probability that at least one has ADHD unusual?  No, this probability is not unusual because it is more than 0.05.  Yes, this probability is unusual because it is more than 0.05.  No, this probability is not unusual because it is within 2 standard deviations of the mean.  Yes, this probability is unusual because it is not within 2 standard deviations of the mean.  No, this probability is not unusual because it is more than 0.01.