The best method of presenting data that occurs over a

Assignment Help Basic Statistics

Reference no: EM13602898

1. A new company came out with a new battery that promised that it would last for more than 8 hours with the standard deviation of 1 hour. A group of researchers studied these batteries. They tested 100 batteries and discovered that they lasted about 8.5 hours. Is company's claim about the new battery supported at the 1% level of significance (?)?

A. Yes
B. No
C. Cannot answer with this information

2. A counselor claims that 20% of all students who take SAT score at least 1200, 25% score between 1000 and 1190, and the remaining 55% score below 1000. A sample of 120 students showed that 20 students had the score of 1200, 35 had a score between 1000 and 1190, while the remaining 65 students scored below 1000. Test the counselor's claim at 0.05 level of significance, using p-value of 50%.

A. Counselor has a valid claim
B. Counselor has invalid claim
C. Cannot aswer with this information

3. A data set consists of the values 2, 6, 3, and 1. If we consider this a population (all the values available), the variance is

A. 12
B. 14
C. square root of 3.5
D. square root of 15
E. none of these

4. The best method of presenting data that occurs over a period of time is:

A. Bar chart
B. PIe chart
C. Line chart
D. All of these are equally effective

Reference no: EM13602898

Questions Cloud

Question what percentage of a photon beam would interact : question what percentage of a photon beam would interact in passing through a 3-mm slice of absorber if the linear

Todd silver is the purchasing agent for moore co one of his : todd silver is the purchasing agent for moore co. one of his supplies gem co offers todd a free vacation to france if

Test the hypothesis that both machines fill to the same net : two machines are used for filling glass bottles with a soft-drink beverage. the filling process have known standard

Question how many average collisions with hydrogen nuclei : question how many average collisions with hydrogen nuclei would a 1 mev neutron need to undergo before it becomes a

The best method of presenting data that occurs over a : 1. a new company came out with a new battery that promised that it would last for more than 8 hours with the standard

Sanhueza inc reported a net cash flow from operating : sanhueza inc. reported a net cash flow from operating activities of 202800 on its statement of cash flows for the year

Calculate the pci of k-40 per gram of human body mass : calculate the pci of k-40 per gram of human body mass. assume the human body is 0.2 potassium by weight the isotopic

Wat trends in the environmental forces social economic : what trends in the environmental forces social economic technological competitive and regulatory work for andor work

Jim takes a simple random sample of 15 from a very large : 1. jim takes a simple random sample of 15 from a very large population whose variance is unknown. she intends to

User Account

All Pages