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Q1 The Director of Golf for a local course wants to study the number of rounds played by members on weekdays. He gathered the sample information shown below for 520 rounds. At the .05 significance level, is there a difference in the number of rounds

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QNT 351 Final Exam Guide (New)
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Q1 The Director of Golf for a local course wants to study the number of rounds played by members on weekdays. He gathered the sample information shown below for 520 rounds. At the .05 significance level, is there a difference in the number of rounds played by day of the week? 2An auditor for American Health Insurance reports that 20% of policyholders submit a claim during the year. 15 policyholders are selected randomly. What is the probability that at least 3 of them submitted a claim the previous year? 3When a class interval is expressed as 100 up to 200, _________________________. 4A coffee manufacturer is interested in whether the mean daily consumption of regular-coffee drinkers is less than that of decaffeinated-coffee drinkers. A random sample of 50 regular-coffee drinkers showed a mean of 4.35 cups per day, with a standard deviation of 1.2 cups per day. A sample of 40 decaffeinated coffee drinkers showed a mean of 5.84 cups per day, with a standard deviation of 1.36 cups per day. What is your computed z-statistic? 5 You perform a hypothesis test at the .05 level of significance. Your computed p-value turns out to .042. What is your decision about the hypothesis?
6 In a distribution, the second quartile corresponds with the __________. 7 The MacBurger restaurant chain claims that the waiting time of customers for service is normally distributed, with a mean of 3 minutes and a standard deviation of 1 minute. The quality-assurance department found in a sample of 50 customers at the Warren Road MacBurger that the mean waiting time was 2.75 minutes. When you perform a test of hypothesis, what would be the resulting p-value? 8 The first card selected from a standard 52-card deck was a king. If it is returned to the deck, what is the probability that a king will be drawn on the second selection? 9 An example of a qualitative variable is _________________. 10 When statisticians analyze sample data in order to draw conclusions about the characteristics of a population, this is referred to as: ===============================================
QNT 351 Final Exam Guide (New, 2019) Score 30/30
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QNT 351 Final Exam Guide (New, 2018) Score 30/3
The mean amount spent by a family of four on food is $500 per month with a standard deviation of $75. Assuming that the food costs are normally distributed, what is the probability that a family spends less than $410 per month?
• 0.1151
• 0.0362
• 0.8750
• 0.2158
As the size of the sample increases, what happens to the shape of the distribution of sample means?
• It cannot be predicted in advance.
• It is negatively skewed.
• It approaches a
normal distribution.
• It is positively skewed.
What is the following table called?
• Frequency polygon
• Frequency distribution
• Histogram
• Cumulative frequency distribution
How is the t distribution similar to the standard z distribution?
• Both
are continuous distributions.
• Both are skewed distributions.
• Both are families of distributions.
• Both are discrete distributions.
In a distribution, the second quartile corresponds with the __________.
• Median
• Variance
• Mean
• Mode
A random sample of 85 supervisors revealed that they worked an average of 6.5 years before being promoted. The population standard deviation was 1.7 years. Using the 0.95 degree of confidence, what is the confidence interval for the population mean?
• 6.99 and
7.99
• 6.14 and 6.86
• 4.15 and 7.15
• 6.49 and 7.49
===============================================
QNT 351 Final Exam Guide
For more course tutorials visit
www.newtonhelp.com
1) The main purpose of descriptive statistics is to 2) The general process of gathering, organizing, summarizing, analyzing, and interpreting data is called 3) The performance of personal and business investments is measured as a percentage, return on investment. What type of variable is return on investment? 4) What type of variable is the number of robberies reported in your city? 5) What level of measurement is the number of auto accidents reported in a given month?
6) The names of the positions in a corporation, such as chief operating officer or controller, are examples of what level of measurement? 7) Shoe sizes, such as 7B, 10D, and 12EEE, are examples of what level of measurement? 8) Monthly commissions of first-year insurance brokers are $1,270, $1,310, $1,680, $1,380, $1,410, $1,570, $1,180, and $1,420. These figures are referred to as 9) A small sample of computer operators shows monthly incomes of $1,950, $1,775, $2,060, $1,840, $1,795, $1,890, $1,925, and $1,810. What are these ungrouped numbers called? 10) The sum of the deviations of each data value from this measure of central location will always be 0 ===============================================
QNT 351 Week 1 Connect Problems
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QNT 351 Week 1 Connect Problem 1. Which of the following is an example of a continuous variable? 2. The incomes of 50 loan applicants are obtained. Which level of measurement is income?

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