3. The following data represents the weights (X, in pounds) of students in a statistics study group.
a) Organize the data into a spreadsheet.
b) Compute the mean weight.
c) Compute the range of weights.
d) Compute the standard deviation of weights.
167, 138, 195, 187, 165, 130
can anyone help me with this? thanks
| Weight ( X ) |
![]() |
|
| 167 | 11.1109 | |
| 138 | 658.7795 | |
| 195 | 981.7757 | |
| 187 | 544.4429 | |
| 165 | 1.7777 | |
| 130 | 1133.4467 | |
| Total | 982 | 3331.3334 |
Mean
Standard deviation
Range = Maximum value - Minimum value
Range = 195 - 130 = 65
Range = 65
3. The following data represents the weights (X, in pounds) of students in a statistics study...
The weights in pounds of a set of male students are described as follows: Weight Frequency 130 2 138 1 145 3 150 6 152 1 155 3 160 1 164 1 165 3 167 4 170 3 172 2 175 1 Generate a scaled frequency bar chart of the data. From your chart, read off the scaled frequency for 130 pounds.
Show work
13) During a routine physical exam of 50 of the 1,110 Mechanical Engineering students at CSUS a mean weight of 170 pounds and a sample standard deviation of 18 pounds were obtained. Assuming a normal distribution, at an 80% confidence level, what interval (range) of the mean weights of all the CSUS Mechanical Engineering students would contain the population mean? a) 165 to 173 b) 167 to 175 c) 165 to 175 d) 167 to 173
The following data represents the weight in pounds of a sample of young boys that are between the ages of 13 years and 15 years 126 231 132 126 128 128 131 136 140 226 156 149 115 117 138 133 131 134 Make a frequency table that represents this data Calculate the mean an the median Calculate standard deviation Create intervals Interpret the result
The mean weight of U.S. men of age 30–39 years old is 191.802 pounds. Using the provided sample data file, conduct a one-sample ?-test of a mean to test whether the mean weight of men of age 30–39 years old who smoke daily is lower than 191.802. Calculate the sample mean, x¯, for this data. Give your answer precise to at least one decimal place: Compute the standard deviation, SD, of the sampling distribution of the mean. (Some people call...
The data below represents height in inches/weight in pounds. Clearly identify the dependent and independent variables as well as the domain and range. Choose any two points from the data using different independent variables and use those two points to determine the rate of change (slope). Then, using the dependent data value of -500 as your initial value, write an equation for the linear function model. Predict what you expect at a height of 75". inches/pounds 60" - 105, 110...
The weights (in pounds) of 30 participants are recorded before
and after a 6 week exercise program.
A. Calculate the difference between the before weight and after
weight of all 30 participants, where a negative value represents
losing weight. Then, find the mean difference of weights. (Round
your answer to the nearest hundredth)
B. Next, find the sample standard deviation for the difference
of weights. (Round your answer to the nearest hundredth)
C. The goal is to find the 90%...
hw problems
QUJIUNTO A data set of weights has a mean of 111 pounds and a standard deviation of 7 pounds. Find the weight having a z-score of -1.25. State your answer to the nearest hundredth (2 decimal places). Do not enter units with your answer.
25 pounds. Find each of the following probabilities. (Round all answers to Weights of men in a certain age group have a normal distribution with mean 170 pounds and standard deviation four decimal places.) (a) F S205) - probability the weight of a randomly selected man is less than or equal to 205 pounds. 8944 (D) XS13) - probably the weight of a randomly selected man is less than or equal to 115 pounds. (C) X 135) - probability the...
2. The following summary statistics represents the number of cars sold in forty days in a showroom. Summary Statistics 18.s 0.435595672 18 18 Mean Standard Error Median Mode Standard Deviation 2.754948927 Sample Variance Kurtosis Skewness Range Minimum Maximum 7.58974359 -0.305892121 0.59249381 10 15 25 (a) Identify the variable for this study (b) How many observations are there for this study? (c) Do these measures of center agree? Explain. (d) Are the data symmetric or skewed? If skewed, which direction? (e)...
1.Child Health and Development Studies (CHDS) has been collecting data about expectant mothers in Oakland, CA since 1959. One of the measurements taken by CHDS is the weight increase (in pounds) for expectant mothers in the second trimester. In a fictitious study, suppose that CHDS finds the average weight increase in the second trimester is 14 pounds. Suppose also that, in 2015, a random sample of 42 expectant mothers have mean weight increase of 15.7 pounds in the second trimester,...