A sample of students is collected by randomly selecting 20 students from each of the 58 community colleges in North Carolina. What type of sampling method was used?

the following frequency distribution that represents the number of minutes participants travel to work. Number of Minutes to Work Frequency 0 – 9 188 10 – 19 375 20 – 29 264 30 – 39 205 40 – 49 83 50 – 59 76 60 – 69 32 What is the class width?

In your own words, explain why reported results could cause problems with analyzing data.

Out of a sample of 328 patients that completed the survey last year, about 64.3% of them claimed to be returning patients.Is the 64.3% a statistic or parameter?

What type of data, quantitative or categorical, is the question “What is your phone number” asking for? Justify your answer.

The Technogene Research Group has developed a procedure designed to increase the likelihood that a baby will be born a girl. In a clinical trial of their procedure, 236 girls were born to 450 different couples. If the procedure has no effect, there is about a 15% chance that these results would occur. Does the procedure appear to have statistical significance? Does the procedure appear to have practical significance? Explain your answers.

Is the question “How would you rate the quality of your medical care on a scale from 1 to 5?” measuring nominal, ordinal, interval, or ratio data?

Hillary Claxton needs to calculate her effective tax rate. She gives you the following income information: Salary $100,000,                                                                                                                                                            Interest income $4,500,                                                                                                                                              Municipal bond interest $12,000. She has $21,000 in itemized deductions. The standard deduction this year is $24,400 and will she and her husband Bill will file as MFJ. Her husband Bill is retired and has no income.Calculate Hillary’s effective tax rate using the following tax rate schedule information  Income of $19,400 -$78,950               tax is $1,940+12% of the amount over $19,400 Income of $78,950 – $168,400            tax is $9,086 +22% of the amount over $78,950 Income of $168,400 – $321,450        Tax is $28,765 +24% of the amount over $168,400

Which of the following must be present in a divorce agreement for a payment to qualify as alimony?I. Payments must be made in cashII. Payments must end at the recipient’s death

Diane Nix  was divorced in June 2014. Her son who is 12, lived with her the entire year. It cost $20,000 to maintain her home and she paid all of this total. Her ex-husband, Jack, paid $5,000  in child support payments. Diane provided $15,000 in support of their son. What is the best filing status for Diane?