see excel spreadsheet. This your answer

# Archive for category: Statistics

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Statistics

### A random sample of 75 eighth grade students’ scores on a national mathematics assessment test has a mean score of 278. This test result prompts a state school administrator to declare that the mean score for the state’s eighth graders on this exam is more than 275. Assume that the population standard deviation is 36. At alphaequals0.12, is there enough evidence to support the administrator’s claim? Complete parts (a) through (e).

russellc, , Statistics, 0see excel spreadsheet. This your answer

### A nutritionist claims that the mean tuna consumption by a person is 3.9 pounds per year. A sample of 60 people shows that the mean tuna consumption by a person is 3.5 pounds per year. Assume the population standard deviation is 1.11 pounds. At alpha equals 0.1, can you reject the claim?

russellc, , Statistics, 0see excel spreadsheet. This your answer

Pequals=0.2709 Pequals=0.0793 Pequals=0.0286 Pequals=0.0143 see excel spreadsheet. This your answer

### Determine whether to reject or fail to reject Upper H 0 at the level of significance of a) alpha equals 0.02 and b) alpha equals0.09.

russellc, , Statistics, 0Upper H H0: mu μ equals=109 Upper H Subscript aHa: mu μ not equals≠109 and P =0.02080.0208. see excel spreadsheet. This your answer

### Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A scientist claims that the mean incubation period for the eggs of a species of bird is less than 57 days.

russellc, , Statistics, 0see excel spreadsheet. This your answer

### or the statement below, write the claim as a mathematical statement. State the null and alternative hypotheses and identify which represents the claim. The standard deviation of the base price of a certain type of all-terrain vehicle is equal to $305.

russellc, , Statistics, 0Part A is just stating the the claim numberically with is u =305. Part B = Ho is the...

### For the statement below, write the claim as a mathematical statement. State the null and alternative hypotheses and identify which represents the claim. A laptop manufacturer claims that the mean life of the battery for a certain model of laptop is more than 5 hours

russellc, , Statistics, 0Part A is just stating the the claim numberically with is u >5. Part B = Ho is the...

### Use the given statement to represent a claim. Write its complement and state which is Upper H 0 and which is Ha. p < 0.55

russellc, , Statistics, 0Part A is the answer. A. Pick the opposite of the "equation" see excel spreadsheet. This your answer B....