Problem #14) A survey of 1000 families was conducted to find how many dogs were owned by each respondent. The following table summarizes the results.
| Number of Dogs: Xi | Number of families: Frequency |
| 0 | 236 |
| 1 | 310 |
| 2 | 282 |
| 3 | 122 |
| 4 | 50 |
| Total | 1000 |
a) Calculate the mean (See table): Justify you answers.
μ = round to 2 decimals.
b) Determine the variance
σ 2 = ξ − μ 2 = round to 4 decimals
c) Compute the standard deviation σ = σ 2 = Round to 4 decimals
Problem #14) A survey of 1000 families was conducted to find how many dogs were owned...
26. DISTRIBUTION OF FAMILIES BY SIZE The Public Housing Authority in a certain community conducted a survey of 1000 families to determine the distribution of families by size. The results follow: Family Size 4 Frequency of Occurrence 350 200245 125 66 104 a. Find the probability distribution of the random vari- able X, where X denotes the number of people in a randomly chosen family. b. Draw the histogram corresponding to the probability distribution found in part (a). e. Find...
A survey was conducted in which 125 families were asked how many cats lived in their households. The results are shown below. a) What is the probability that a randomly selected family has one cat? b) What is the probability that a randomly selected family has more than one cat? c) What is the probability that a randomly selected family has cats? d) Is this an example of classical, empirical, or subjective probability? Number of Cats Number of Households 0...
A national survey asked people, "How often do you eat out for dinner. (a) Construct a relative frequency distribution of the data. instead of at home?" The frequencies were as follows. Complete parts (a) through (9) Relative Response Frequency Never Response Frequency Rarely Never 252 Sometimes Rarely 569 Most of the time Sometimes 966 Most of the time Always 371 Always (Round to three decimal places as needed.) 68 (b) What percentage of respondents answered "Always"? (Round to one decimal...
Can somone show me how to do the 1st problem? Need to
find the LS and SS for the fit and the LH and SH for the hole.
Fits are all SHAFT BASIS METRIC but the shaft and hole diameters can not be used right out of the table. This is because the 3mm shaft tolerance does not match. You will need to lookup the "Fit" from the table, and then use the LS (Largest Shaft) and SS (Smallest Shaft)...
This Test: 45 pts pos Find the indicated z-scores shown in the graph Click to view.page 1 of the Standard Normal Table The z-scores are Use a comma to separate answers as needed Round to two decimal places as needed ) Find the indicated probability using the standard normal distribution. P(z > 2.02) Click here to view page 1 of the standard normal table, Click here to view page 2 of the standard normal table P(Z> 2.02)(Round to four decimal...