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A local consultant randomly selects a sample of 36 meals whose mean price is determined to be $8.75. Assuming that σ = $0.75, calculate a 95% confidence interval for the population mean price.
Identify three discrete variables that appear in your current or future career. How do those variables affect your workplace, your product, or your personnel?
Standard deviation of these values to estimate the mean value for all parts the operator is making. Construct a 95% confidence interval for the mean value assuming a normal distribution.
Identify discrete random variables that would contribute to your decision to purchase the business. Indicate what factors would contribute to you changing your decision.
Use a 0.01 significance level to test the claim that the sample is from a population with a mean less than 5.4. Based on the above situation, compute the value of the test statistic.
The lifetime of African Cichlids is unknown but the sample of 75 cichlids were taken and its mean life time was 5.2 years. What is the 95% confidence interval for the lifetime of the African fish.
Describe a plausible study for each of the following statistical procedures, indicating how it would apply and what results you would predict.
Do these scores suggest that the different foods are differentially preferred by people in general? Use the five steps of hypothesis testing.
Develop a new decision tree to reflect the options now open to the market study (the previous decision tree had the following information: $100,000 profit for favorable market.
Graph the information using a histogram and a scatter plot in Excel as well. How does seeing the information in a graphical format provide more information?
What is an independent (nonrelated) sample? What is a dependent (related) sample? When should researchers use different hypothesis tests for independent and related samples?
Let "a" be a positive n-bit binary number and let "b" be a positive m-bit binary number. What is the range of values that the multiplication of those two numbers (a∗b) will have?
At a college 60 percent of the students are women and 40 percent of the students receive a grade of C. If a randomly selected student is a female student, what is the probability she is a C student?
Complete this frequency table for the above data showing columns for Frequency, Relative Frequency, and Cumulative Relative Frequency and plot the Ogive curve.
15 get both questions 2 and 3 incorrect, and 8 get both questions 1 and 3 incorrect, and 7 get all three questions incorrect. Find the probability that a randomly selected student?
Is there any statistically significant difference in how the drugs perform? If so, explain the effect. Use the post hoc tests as needed. Write up the results using APA style and interpret them.
Construct a relative-frequency histogram for the chest circumference data, using classes based on a single value.
Calculate the average of deposits per bank for FDIC- inured institutions during both time periods and describe the relationship between the two averages. Provide a reason for the difference.
The moment generating function of normal distributed random variable ,Y, with mean and variance. Derive the moment generating function of X=-3Y+4. what is the distribution of X? Why?
construct a scatter plot, using sales as the dependent variable and median family income as the independent variable. discuss the scatter plot.
In you determine the GPA of 10 members of the class and then calculate the average, will the number you get necessarily be the same as the average GPA for the whole class?
If there are 9 classes in a frequency distribution then then fifth class must contain the median. (the ((N+1)/2 th value. The level of satisfaction in a consumer survey would represent what level of m
Calculate the standard deviation for this data = since it is a case of grouped data with classes. use group or class midpoints in the formula in place of x values.
Four employees work as a drive in attendees at a local fast food restaurant. Workers were observed over three days. what is the probability that Jan has prepared your order?
Rresearcher investigated the effect of the volume of the background noise on participants' accuracy rates while performing a boring task. Perform the appropriate post-hoc tests.