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There are 482 studemts in the school and there are two Grade 4 classes: Ms.Ashley's and Mr.Ben's classes. Mrs. Aheley's class had 15 boays and 6 girls. Mr Ben's class ahd 14 girls and 10 boys. In Ms. Ashley's class, 2/3 of the students wear glasses. In Mr. Ben's class, 1/4 of the kids have others siblings in the school.1. What fraction of the students in the school are in grade 4?2. What fraction of the grade 4 students are boys?3. What fraction of the grade 4 students are in Ms. Ashley's class?4. What fraction of the students in Mr. Ben's class that do not have siblings in the same school?5. In Ms. Ashley's class, are there more students that wear glasses or do not wear glasses?
General
1 month ago
A hospital has a large tank with a dimension shown. The tank does not have a cover. What is the surface area of the fish tank.
General
1 month ago
A survey was conducted that asked 997 people how many books they had read in the past year. Results indicated that x overbar equals 13.2 books and sequels 18.9 books. Construct a 95 % confidence interval for the mean number of books people read. Interpret the interval.
General
1 month ago
A new type of fertilizer is being tested on a plot of land in an orange grove, to see whether it increases the amount of fruit produced. The mean number of pounds of fruit on this plot of land with the old fertilizer was 409 pounds. Agriculture scientists believe that the new fertilizer may decrease the yield. State the appropriate null and alternate hypothesesa. The null hypothesis is ____________b. The alternate hypothesis is ___________
General
1 month ago
A personnel researcher has designed a questionnaire and she would like to estimate the average time to complete the questionnaire. Suppose she samples 100 employees and finds that the mean time to take the test is 27 minutes with a standard deviation of 4 minutes. Construct a 90% confidence interval for the mean time to complete the questionnaire. Also, write a short explanation about the findings to the human resources director of your company summarizing the results. Use Excel for this analysis.
General
1 month ago
30 POINTS!!! Calculate the percent increase or decrease between the starting and ending quantities below. Round your answer to one decimal place.1) Start: 3 End: 102) Start: 9 End: 203) Start: 100 End: 85
General
1 month ago
Solve for x. 3^x−1=9^x+2 Enter your answer in the box. x =
General
1 month ago
The local appliance store is offering 15% off an entire purchase of $2,000 or more; or 30% off a singleitem of $1,000 or more. Use the prices listed above to determine which offer will save the mostmoney on these appliances?
General
1 month ago
Raffle tickets are sold and 6 prizes are available for the lucky draw. A total of 1,356 raffle tickets are sold for 4/5 dollars each and the 6 prizes cost 8 3/10 each. How much money was raise from the raffle tickets?
General
1 month ago
kathy has a garden that is 15 feet wide and 20 feet long.she will plant 1 bulb per square foot.each bang contains 9 bulbs.how many bag does kathy need
General
1 month ago
TO TRANSMIT INFORMATION ON THE INTERNET, LARGE FILES ARE BROKEN INTO PACKETS OF SMALLER SIZES. EACH PACKET HAS 1,500 BYTES OF INFORMATION. AN EQUATION RELATING PACKETS TO BYES OF INFORMATION IS GIVEN BY B=1,500P REPRESENTS THE NUMBER OF PACKETS AND B REPRESENT THE NUMBER OF BYTES OF INFORMATION.A. HOW MANY PACKETS WOULD BE NEEDED TO TRANSMIT 30,000BYTES OF INFORMATIONB. HOW MUCH INFORMATION COULD BE TRANSMITTED IN 30,000 PACKETS
General
1 month ago
A survey conducted five years ago by the health center at a university showed that 18% of the students smoked at the time. This year a new survey was conducted on a random sample of 200 students from this university, and it was found that 50 of them smoke. We want to find if these data provide convincing evidence to suggest that the percentage of students who smoke has changed over the last five years. What are the test statistic (Z) and p-value of the test?
General
1 month ago
According to a survey, 50% of Americans were in 2005 satisfied with their job.Assume that the result is true for the current proportion of Americans. A. Find the mean and standard deviation of the proportion for a sample of1000.
General
1 month ago
The average GRE score at the University of Pennsylvania for the incoming class of 2016-2017 was 311. Assume that the standard deviation was 13. If you select a random sample of 40 students, what is the probability that the sample mean will be greater than 308? Round your answer to three decimal places.
General
1 month ago
TO TRANSMIT INFORMATION ON THE INTERNET, LARGE FILES ARE BROKEN INTO PACKETS OF SMALLER SIZES. EACH PACKET HAS 1,500 BYTES OF INFORMATION. AN EQUATION RELATING PACKETS TO BYES OF INFORMATION IS GIVEN BY B=1,500P REPRESENTS THE NUMBER OF PACKETS AND B REPRESENT THE NUMBER OF BYTES OF INFORMATION. A. HOW MANY PACKETS WOULD BE NEEDED TO TRANSMIT 30,000BYTES OF INFORMATION B. HOW MUCH INFORMATION COULD BE TRANSMITTED IN 30,000 PACKETS
General
1 month ago
I need help with 8 and 9 please!
General
1 month ago
joe bought g: gallons of gasoline for $2.85 per gallon and c: cans for oil for 3.15 dollars. Part A:what expression can be used go determine the total amount joe spent on gasoline and oil?part B:if he bought 8.4 gallons of gasoline and 6 cans of oil, how much will he have spent in all? please help! thank you :D
General
1 month ago
**HELP** ILL GIVE YOU 50 POINTS TO HELP MEuse the vertical line test to determine if the relation [(-6 -2),(-2 6),(0,3),(3,5)] is a function. explain your reason
General
1 month ago
mrs.jones rented a truck to move to a new apartment the regular price of a truck rental is 150 mrs.jones has a 20% off coupon she wants to know the sale price of truck rental
General
1 month ago
The amount of cola in a 355 ml bottle from a certain company is a random variable with a mean of 355 ml and a standard deviation of 2 ml. For a sample of size 32, perform the following calculations. a. Find an approximate probability that the sample mean is less than 354.8 ml. b. Suppose the amount of cola is distributed as N(355, 4). Find an approximate probability that 10 of the bottles in the sample contain less than 354.8 ml of cola.
General
1 month ago
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