variables when tested by a researcher is called: (Points : 1) | Null hypothesis Type I error Type II error Negative interval | 2. Bivariate statistics refers to the statistical analysis of the relationship between two variables. (Points : 1) | True False | 3. Positive relationships between two variables indicate that, as the score of one increases, the score of the other increases. (Points : 1) | True False |
and[pic]? Between s and[pic]? (10 points) 2. Explain the difference between [pic] and [pic] and between [pic] and[pic]? (10 points) 3. Suppose that a random sample of size 64 is to be selected from a population having [pic] and standard deviation 5. (a) What are the mean and standard deviation of the [pic] sampling distribution? Can we say that the shape of the distribution is approximately normal? Why or why not? (10 points) (b) What is the probability
Ch. 7 The Normal Probability Distribution 7.1 Properties of the Normal Distribution 1 Use the uniform probability distribution. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Provide an appropriate response. 1) High temperatures in a certain city for the month of August follow a uniform distribution over the interval 64°F to 92°F. What is the probability that a randomly selected August day has a high temperature that exceeded 69°F? A) 0.8214
histogram for the variable “APPOINTMENTS” depicts that the distribution of that variable is approximately normal with (M = 28.78, SD = 4.378). The median (29.00) which is almost coincides with the mean (28.78) and the coefficient of skewness (.04) is almost same as ‘0’, also confirms that the distribution is symmetric. The coefficient of kurtosis (–.16), close to ‘0’ specifies that the distribution of “APPOINTMENTS” is approximately normal. 2. Graphical and numerical summaries for 2nd individual variable
CHAPTER 7—SAMPLING AND SAMPLING DISTRIBUTIONS MULTIPLE CHOICE 1. From a group of 12 students, we want to select a random sample of 4 students to serve on a university committee. How many different random samples of 4 students can be selected? a.|48| b.|20,736| c.|16| d.|495| ANS: D 2. Parameters are a.|numerical characteristics of a sample| b.|numerical characteristics of a population| c.|the averages taken from a sample| d.|numerical characteristics of either a sample or a population| ANS:
Directions: This test is open-book and open notes and covers the content from weeks 1 through week 4 of EC/315. The test will be typed and submitted in the Dropbox marked Midterm Exam. The midterm is due the last day of Week 4. PROBLEM 1 (Weight 40 points). NBC TV news, in a segment on the price of gasoline, reported last evening that the mean price nationwide is $1.50 per gallon for self-serve regular unleaded. A random sample of 35 stations in the Milwaukee, WI, area revealed that the mean
Midterm Exam_MATH302 Question 1 of 25 0.0/ 1.0 Points Which of the following statistics is not a measure of central location? A.Interquartile range (CORRECT) B.Median C.Mode D.Mean Question 2 of 25 1.0/ 1.0 Points If events A and B are mutually exclusive, then the probability of both events occurring simultaneously is equal to A.0.0 (CORRECT) B.1.0 C.0.5 D.any value between 0.5 and 1.0 Question 3 of 25 1.0/ 1.0 Points The table below shows the preferences for elective
ANALYSIS 14 Statistical Analysis of Age-Based Customers Behavior Name: Institution: Date: Table of Contents Introduction 3 Frequency Distribution of Customers based on their Ages 4 Measures of Central Tendency 5 The Arithmetic Mean 5 The Median 5 The Mode 5 Probability Distribution and Probability Density 6 Skewness of the Age Distribution 8 Kurtosis of the Histogram 10 Conclusion and Recommendation 13 References 14 Introduction The following report establishes the buying habits
Norte State College, New Visayas, Panabo City picar_joy@yahoo.com ABSTRACT The efficiency of Mean Square Error (MSE) of the random normal variables generated from both the Marsaglia Polar Method and Box-Muller Method was examined for small and large n with Monte-Carlo application using MATHLAB. The empirical results showed that MSE of the random normal variables using the Marsaglia Polar Method approaches zero as n becomes larger. Moreover, when run in MATHLAB, the Box-Muller method
following data: 1, 7, 3, 3, 6, 4 the mean and median for this data are a. 4 and 3 b. 4.8 and 3 c. 4.8 and 3 1/2 d. 4 and 3 1/2 e. 4 and 3 1/3 2. A distribution of 6 scores has a median of 21. If the highest score increases 3 points, the median will become __. a. 21 b. 21.5 c. 24 d. Cannot be determined without additional information. e. none of these 3. If you are told a population