Suppose the following table was generated from the sample data of 20 campuses relating the total number of crimes committed to the number of police officers on campus and if the college or university is public. Coefficients Standard Error t Stat P-Value Intercept 584.297851 14.012838 41.697324 0.000000 Number of Officers -7.684105 0.463427 - 16.581047 0.000000 Public (1 if public, O otherwise) - 52.473715 5.408220 -9.702585 0.000000 Step 1 of 2: In this regression equation, what is the intercept value for colleges or universities that are private? Enter your answer in the space provided. Do not round your answer.

In a large city, researchers selected a random sample of 120 individuals who have multiple televisions in their house connected to a streaming device. Each individual was asked how many hours of streaming content they watch in a typical week. The sample had a mean of 12.5 hours. For which of the following populations is 12.5 hours a reasonable estimate of the mean hours of weekly streaming content watched? (A) All individuals who regularly watch streaming content (B) All individuals from this city who regularly watch streaming content (C) All individuals from this city with multiple streaming devices in their house (D) All individuals from this city with multiple streaming devices in their house who regularly watch streaming content (E) All 120 individuals in this city with multiple streaming devices in their home who regularly watch streaming content

Suppose 140 geology students measure the mass of an ore sample. Due to human error and limitations in the reliability of the balance, not all the readings are equal. The results are found to closely approximate a normal curve, with mean 85 g and standard deviation 2 g. Use the symmetry of the normal curve and the empirical rule as needed to estimate the number of students reporting readings between 81 g and 89 g. The number of students reporting readings between 81 g and 89 g is (Round to the nearest whole number as needed.)

The mean age of all 663 used cars for sale in a newspaper one Saturday last month was 7.5 years, with a standard deviation of7.1 years. The distribution ads, a reporter randomly selects 50 of these used cars and plans to visit each owner to inspect the cars. He finds that the mean age of the 50 cars he sam Complete parts a through c. a From the problem statement, which of the values 75,7.1, 7.9, and 5.6 are parameters and which are statistics? The value 7.5 is a The value 7.1 is a The value 7.9 is a The value 5.6 is a

Monthly salary computations from two different companies yielded the following data: n1 = 7, x1=9,120$, s1=384$; n2 = 7, x2=8,820$, s2=214$. At the level of significance 0.05, can we conclude that the mean monthly salary from the two ompanies is not the same?

Calculate the 5 number summary and the interquartile range of the following data: 20, 36, 78, 18, 37, −33, 32, 44, 54, 28, 74, 12, 61, 47, 40, 4820, 36, 78, 18, 37, −33, 32, 44, 54, 28, 74, 12, 61, 47, 40, 48 Q1 = Q2 = Q3 = Min = Max = IQR =

Suppose a data set has size 10. Indicate which of the following would change if the maximum of the data set was replaced with a larger value. (a)First quartile (b)Median (c)Range (d)Mean

Suppose that we have a set of 1000 values with average 4, and standard deviation 3. (This is population data). a) The sum of the values of this set is b) The sum of squares of deviations from the average of the values is c) The sum of squares of the values is d) If the data has an empirical histogram, 7 is approximately the integer as the answer). th percentile (Give an The 97.5th percentile is approximately (Give an integer as the answer). e) If the histogram of the data is unknown, the (100 * ) th percentile is at most