Sierra has surveyed 21 classmates about the number of pets in their household and received the following frequency table: Number Frequency 0 1 2 1 6 2 5 3 1 4 5 5 1 6 Let A be the event in which for a randomly selected classmate the number of pets in their household is 3 and let B be the event in which for a randomly selected classmate the number of pets in their household is 5. Find the following probabilities: % (Round the answer to 2 decimal places.) P(A or B) = % (Round the answer to 2 decimal places.) P(A and B) =

Need now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.