I am completely lost on this one. I have looked in my math book and can't find another problem like this to compare to.
Here is my attempt at getting the answer:
a.) 400 *0.80 / 400 = 0.8 is the mean
b.) sqr root ( 0.8 (1-0.8) / 400 = 0.02 Standard deviation
c.) This is where I am unsure : P( 0.79-0.80) / 0.02 = 1- (-0.5) answer = 1.5 ??
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I am completely lost on this one. I have looked in my math book
and can't...
In a cognitive psychology experiment, the researcher is interested in whether encoding condition has a significant...
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these are the only questions i have left can someone help me with these questione please...
these are the only questions i have left can someone help me
with these questione please
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lb and 171 lb. The new population of pillots has normally duributed weights with a mean of 138 lb and a standard deviation of 25.1 lb. a. If a pilot is randomly selected, find the probability that his weight is between 130 b...
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Step 1 of 5:State the null and alternative hypotheses for the test. Step 2 of 5:...
Step 1 of 5:State the null and alternative hypotheses for the
test.
Step 2 of 5: Find the value of the standard deviation of the
paired differences. Round your answer to two decimal places.
Step 3 of 5:Compute the value of the test statistic. Round your
answer to three decimal places.
Step 4 of 5: Find the p-value for the hypothesis test. Round
your answer to four decimal places.
Step 5 of 5: Draw a conclusion for the hypothesis test....
In a program designed to help patients stop smoking, 236 patients were given sustained care, and...
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Math 6 SL Probability Distributions Practice Test Questions
Let X be normally distributed with mean 100 cm and standard deviation 5 cm.
(a) On the diagram below, shade the region representing P(X > 105).
(2)
(b) Given that P(X < d) = P(X > 105), find the value of d.
(2)
(c) Given that P(X > 105) = 0.16 (correct to two significant figures), find P(d < X < 105).
(2)
(Total 6 marks)
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For problems 7-9 below you have to apply p value method. Use on Statkey Normal or...
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Please help me with my whole assigment 1. [7 marks in total] A statistics practitioner took...
Please help me with my whole assigment
1. [7 marks in total] A statistics practitioner took a random sample of 31 observations from a normal population. The sample standard deviation is 34 and the sample mean is 97. Note: For each confidence interval, enter your answer in the form (LCL", UCL"). You must include the parentheses and the comma between the confidence limits. A. Estimate the population mean with 95% confidence. Diagram Confidence interval B. Estimate the population mean with...
Question 11 A group of 53 college students from a certain liberal arts college were Type numbers in the boxes....
Question 11 A group of 53 college students from a certain liberal arts college were Type numbers in the boxes. randomly sampled and asked about the number of alcoholic drinks they have 10 por in a typical week. The purpose of this study was to compare the drinking habits of the students at the college to the drinking habits of college students in general. In particular, the dean of students, who initiated this study, would like to check whether the...
can someone help me answer these please! i am stuck and these are the only questions...
can someone help me answer these please! i am stuck and these
are the only questions i do not get it would be a huge help
please
Question Help Assume that thermometer readings are normally distributed with a mean of oC and a standard deviation of 1.00°C. A thermometer is randomly selected and tested. For the case below, draw a sketch, and find the probability of the reading. (The given values are in Calsius degrees.) Between 0.75 and 1.75 Click...
these are the only questions i have left can someone help me
with these questione please
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lb and 171 lb. The new population of pillots has normally duributed weights with a mean of 138 lb and a standard deviation of 25.1 lb. a. If a pilot is randomly selected, find the probability that his weight is between 130 b...
Step 1 of 5:State the null and alternative hypotheses for the
test.
Step 2 of 5: Find the value of the standard deviation of the
paired differences. Round your answer to two decimal places.
Step 3 of 5:Compute the value of the test statistic. Round your
answer to three decimal places.
Step 4 of 5: Find the p-value for the hypothesis test. Round
your answer to four decimal places.
Step 5 of 5: Draw a conclusion for the hypothesis test....
In a program designed to help patients stop smoking, 236 patients were given sustained care, and 84.3% of them were no longer smoking after one month. Use a 0.05 significance level to test the claim that 80% of patients stop smoking when given sustained care. Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho:p*0.8 H: p=0.8 OB. Ho: P = 0.8 H:p<0.8 @ C. Ho: p = 0.8 H:p*0.8 OD. Ho: p=0.8...
For problems 7-9 below you have to apply p value method. Use on Statkey Normal or distribution to find the p value 7. Test the claim that the population of sophomore college students has a mean grade point average greater than 2.25. Sample statistics include na 160 students, sample mean is 2.35, and population standard deviation is equal 0.60 Use a= 0.02 level of significance. a) What is the null hypothesis? b) What is an alternate hypothesis? c) Is this...
Please help me with my whole assigment
1. [7 marks in total] A statistics practitioner took a random sample of 31 observations from a normal population. The sample standard deviation is 34 and the sample mean is 97. Note: For each confidence interval, enter your answer in the form (LCL", UCL"). You must include the parentheses and the comma between the confidence limits. A. Estimate the population mean with 95% confidence. Diagram Confidence interval B. Estimate the population mean with...
Question 11 A group of 53 college students from a certain liberal arts college were Type numbers in the boxes. randomly sampled and asked about the number of alcoholic drinks they have 10 por in a typical week. The purpose of this study was to compare the drinking habits of the students at the college to the drinking habits of college students in general. In particular, the dean of students, who initiated this study, would like to check whether the...
can someone help me answer these please! i am stuck and these
are the only questions i do not get it would be a huge help
please
Question Help Assume that thermometer readings are normally distributed with a mean of oC and a standard deviation of 1.00°C. A thermometer is randomly selected and tested. For the case below, draw a sketch, and find the probability of the reading. (The given values are in Calsius degrees.) Between 0.75 and 1.75 Click...
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