is μ = d dev Table of numbers of girls and probabilities Number of Girls x 012345678 Print P(x) 0.004 0.032 0.107 0.215 0.292 0.212 0.102 0.033 0.003 Done

Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 births. Click the icon to view the data table. The mean is µ = girl(s). (Round to one decimal place as needed.) Table of numbers of girls and probabilities Number of Girls x P(x) 0.006 1 0.031 2 0.114 3 0.212 4 0.266 0.224 0.115 7 0.029 8. 0.003 Print Done

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6789SAWNI 2 4 5 10 11 12 261723 6,2 1, 5, 2, 7 A 7,8,4 2,5 3,6 6 where 7 | 2 = 72 students Calculate the mean of the data. Mean = 42.5 Mean = 45.5 Mean = 48 Mean=84

A sample of 3 measurements are taken and recorded: a =8, y = 10 and z = 7 The sample mean is: x = = 8.33 Fill in the table below. aj (a; - x)2 Ex: 5.34 Ex: 5.34 Ex: 5.34 82 = (z-z)*+(y-a)* +(z-z) Ex: 5.34 (z-2)*+(y-z)* +(z-) = Ex: 5.34

A sample of eight math SAT scores is given below:   650,650,520,680,600,740,610,570   Find the first and third quartiles and the interquartile range for this sample. First Quartile =  Third Quartile =  Interquartile Range = Hint You should be using the formula Lp=p/100×(n+1)Lp=p/100×(n+1).

Find the probability that the sample mean of Xbar = 20 hours, as observed here, less than or equal 20 hours could arise if the true mean of the lot

The average daily high temperature in degrees Celsius (C) during the month of July was recorded for the 51 largest cities in the United States. Summary measures are shown below. Mean 30.84 Standard Deviation 3.78 Median IQR 31 5 Range 22 Which of the following represents the median and interquartile range (IQR) of these average daily high temperatures in degrees Fahrenheit (F), where F = (3) C + 32? (A) Median = 52.8°F, IQR = 9°F (B) Median = 52.8°F, IQR = 41°F (C) Median 87.8°F, IQR = 5°F (D) Median = 87.8°F, IQR = 9°F (E) Median 87.8°F, IQR = 41°F

A researcher is curious about the average IQ of registered voters in the state of Florida. If this average could be obtained, it would be an example of a (a) parameter (b) population (c) sample (d) statistic (e) None of the above

An experiment was conducted in which two fair dice were thrown 100 times. The sum of the pips showing on the dice was then recorded. The frequency histogram to the right gives the results. Use the histogram to complete parts (a) through (f). (a) What was the most frequent outcome of the experiment? Frequency 20- -N 2 Sum of Two Dice -to -ra 6 8 Value of dice 10 12 Q 17