Chapter 6Quiz

A fireman's softball team wins 6 games out of the first 9 played. They go on to win all their remaining games and finish the season with a final average of games won of .750.  The TOTAL number of games they played that season was ?

For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. In a marketing survey, a random sample of 726 women shoppers revealed that 638 remained loyal to their favorite supermarket during the past year (i.e., did not switch stores).

"Save today by switching to SOAR!" is the slogan for SOAR, a cell phone service provider. Logan wants to estimate how much money customers who switch to SOAR save on their monthly bill. He surveys 75 people who have recently switched to SOAR and asks each one how much they are saving in their monthly bill as a result of the switch. He finds the average savings of the sample to be $19.03 and historical records indicate that o = $4.71 What is the standard error in estimating monthly phone bill savings? 0.895 0.544 4.710 0.236

The average annual precipitation on Mt. Washington, New Hampshire, is 90 inches. During one particularly wet year, different news reports carried the following statement. The precipitation this year is 200% of normal. What does this imply about the precipitation during this year?

EIGHTEEN Options for part (b) a. "Z"  b. "t"  c. "Chi-square"  d. "F"

From your hotel room, you look down at the street and want to estimate howmany taxis are available. You know that taxis are numbered sequentially, and,from your window, you can make out a passing taxi’s number as 50. What isyour unbiased estimate for the total number of taxis in town?

A researcher at a major hospital wishes to estimate the proportion of the adult population of the United States that has high blood pressure. How large a sample is needed in order to be 99% confident that the sample proportion will not differ from the true proportion by more than 4%? O A. 1,037 O B. 17 O C. 2,073 D. 849 Click to select your answer. DELL

QUESTION 9 Jasmeen sells scrunchies and hair bands in an online shop. The scrunchies sell for $5 each and the hair bands sell for $8 each. Last week they sold 220 scrunchies and hairbands altogether. They collected $1,505 in sales last week. How many SCRUNCHIES did they sell last week?

Oxnard College reports your GPA on a 4.0 scale. The "4" in the 4.0 GPA scale is equivalent to an A, "3" is equivalent to a B, "2" is equivalent to a C, "1" is equivalent to a D, and "0" is equivalent to a F. Last semester, a student recieved the following gradesC in a 2 units Math course F in a 4 units Music course B in a 4 units Chemistry course A in a 4 units Journalism course What is the student's GPA for that term? Round to two decimal places. Student's GPA =

According to a certain central bank from 2000 to 2016 the average price of a new home in a certain region increased by 53% to $402,000. What was the average price of a new home in 2000?

Suppose that the chances of rain this weekend in Monterey are 14% and the chances of rain this weekend in Buenos Aires are 33%.  If we assume that the weather in those two locations is independent, what are the chances that it will rain in both locations? Write your answer as a decimal rounded to 3 decimal places.

Al gave correct answers to 47 of the 50 questions on the driving test . What percentage of the questions did he get correct?

During their freshman year, Derek's GPA was 3.5 and Terry's was 3.1. During their sophomore year, Derek's GPA was 3.6 and Terry's was 3.5. Which of the following is not necessarily true? Choose the correct answer below. A. Terry's overall GPA for the two year-period was somewhere between 3.1 and 3.5. B. Terry's overall GPA for the two-year period could be lower, higher or the same as Derek's overall GPA for the two-year period. C. Derek's overall GPA for the two year-period was somewhere between 3.5 and 3.6. D. Terry had a lower GPA than Derek during their freshman year and again in their sophomore year. E. Derek's overall GPA for the two-year period was higher than Terry's because their GPA's may have been weighted differently. OF. Derek had a higher GPA than Terry during their freshman year and again during their sophomore year.

. When Leif turned 10, his mom was four times his age. How old will she be when Leif turns 15?

The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to find out the fraction of people who appear on the list that are actually caught. Step 1 of 2: Suppose a sample of 233 suspected criminals is drawn. Of these people, 72 were captured. Using the data, estimate the proportion of people who were caught after being on the 10 Most Wanted list. Enter your answer as a fraction or a decimal number rounded to three decimal places.   Step 2 of 2: Suppose a sample of 233 suspected criminals is drawn. Of these people, 72 were captured. Using the data, construct the 80% confidence interval for the population proportion of people who are captured after appearing on the 10 Most Wanted list. Round your answers to three decimal places.

According to the U.S. Census Bureau, the District of Columbia's population is currently 572,000. If the population has been growing at a average of 6% a year for the past ten years, what was the approximate population 10 years ago? Round to the nearest person. O 394,012 O 309,402 O 419,302 O 342,019

Suppose that the result of a public opinion poll shows that just 10% of people would be willing to give up their cell phones for 1 week in exchange for $100. How many people would need to be surveyed in order to have a margin of error of ±2%?

Can someone help me with this problem?   People who are 65 years of age or older make up 13.1% of a certain​ country's total population. If there are 32.1 million people in this age​ group, find the total population of the country.

The state education commission wants to estimate the fraction of tenth-grade students that have reading skills at or below the eighth-grade level. Step 1 of 2 :   Suppose a sample of 1134 tenth graders is drawn. Of the students sampled, 226 read at or below the eighth-grade level. Using the data, estimate the proportion of tenth graders reading at or below the eighth-grade level. Enter your answer as a fraction or a decimal number rounded to three decimal places.

Oxnard College reports your GPA on a 4.0 scale. The "4" in the 4.0 GPA scale is equivalent to an A, "3" is equivalent to a B, "2" is equivalent to a C, "1" is equivalent to a D, and "0" is equivalent to a F. Last semester, a student recieved the following gradesA in a 4 units Math courseC in a 4 units Music courseA in a 4 units Chemistry courseF in a 4 units Journalism courseWhat is the student's GPA for that term? Round to two decimal places.Student's GPA =

Select the value of [-5.8] 0 6 O -6 O 5 O 5

During his short stint as Shadow Finance Minister, Barnaby Joyce displayed a curious grasp of numbers. One of his most infamous exclamations was “All this billions, quillions, Brazilians.” Less well known was his tax-reform proposal, recommending that if you earn $x per day, you are taxed x% of that amount (with the understanding that you pay 100% tax if you earn $100 or more per day. Under Senator Barnaby’s plan, which amount x gives you the highest earnings after tax has been taken out?