WGU C955 Study guides, Class notes & Summaries

WGU C955 APPLIED PROBABILITY AND STATISTICS OA ACTUAL QUESTIONS AND CORRECT DETAILED ANSWERS|ALREADY GRADED A+

Boxplot an image that has min, Q1, median, Q3, max Histogram A graphical representation -- bars, measuring the frequency within each interval Skewed right Not a symmetric distribution, the tail is on the right, i.e. extra stuff on the right Measures of center Median, the mean (and mode) Measures of spread Range, IQR & standard deviation Standard Deviation Rule 68% of the data are within 1 standard deviation, 95% are within 2, 99.7 are within 3 standard deviations from the mean. For skewed...

What is the probability of someone having a birthday in March or December? a 1/6 b 1/4 c 1/3 d 1/2 1/6 The table below shows the breakdown of workers at a business. What is the probability of selecting a worker who is over 45 years of age to the nearest hundredth? Age 18−25 26−44 45+ Total Male Female Total a 0.16 b 0.29 c 0.42 d 0.55 0.2

Identify the number of terms and the coefficient for the x term in the expression: 4x−3y+7 a Terms: 2 ; Coefficient: −3 b Terms: 2 ; Coefficient: 4 c Terms: 3 ; Coefficient: −3 d Terms: 3 ; Coefficient: 4 Terms: 3 ; Coefficient: 4 What is the equation of the graph in slope-intercept form? {{ A graph of a line moving up and to the right that passes through (0,-1) and (1,2). }} a y=−3x−1 b y=3x−1 c y=3x+1 d y=−3x+1 y=3x-1

What is 3/4 divided by 2/3? A) 9/8 B) 5/12 C) 5/7 D) 6/7 9/8 A county park has hiking paths with lengths of 1.05, 3.6, 3.17, and 2.2 miles. What is the total length, in miles, of hiking paths in the park? A) 9.02 miles B) 10.02 miles C) 10.12 miles D) 11.2 miles 10.02 miles If there are 2 tablespoons in 1 fluid ounce, how many tablespoons does the following calculation yield? 4 fl oz - 1.5 tbsp

WGU C955 APPLIED PROBABILITY AND STATISTICS OA ACTUAL QUESTIONS AND CORRECT DETAILED ANSWERS|ALREADY GRADED A+

A researcher wants to know if there was a relationship between student age and desire to complete a college degree. To answer this question, the researcher used a local community college as the sampling frame and then used stratified sampling to get a sample of students from 18 to 80 years old. Based on the information given, is there any potential bias in this study? a Yes, because the sampling frame does not match the intended population of the question. b Yes, because the sampling method ...

The relationship between the two variables on a scatterplot can be measured by what statistic? {{ Scatterplot of sales on the x-axis and profit index on the y-axis. }} a Correlation coefficient ( r ) b Regression c ANOVA d Chi-square - ️️Correlation coefficient ( r ) A study was completed to investigate if commutes of longer than 30 minutes increased the risk of burnout. The results of the study are in the table below. ,Lenth of Commute ,<30 Minutes ,>30 Minutes ,Total...

Which of the following numbers is taken out to the hundredths place? a 1.1 b 1 c 1.04 d 1.047 - ️️1.04 Please evaluate the following expression: (Be sure to convert your answer to a mixed number or reduce the fraction to its lowest terms.) 6 3/8 + 4 1/2 = ? a 10 3/8 b 10 5/8 c 10 7/8 d 11 1/8 - ️️10 7/8 Please evaluate the following expression with decimals: 7.82+2.947= ? a 10.767 b 8.114 c 10.029 d 9.127 - ️️10.767 Please evaluate the following expressi...

What is the probability of someone having a birthday in March or December? a 1/6 b 1/4 c 1/3 d 1/2 - ️️1/6 The table below shows the breakdown of workers at a business. What is the probability of selecting a worker who is over 45 years of age to the nearest hundredth? Age 18−25 26−44 45+ Total Male Female Total a 0.16 b 0.29 c 0.42 d 0.55 - ️️0.29