A researcher would like to determine whether humidity can have an effect on eating behavior. It’s...
A researcher would like to determine whether humidity can have an effect on eating behavior. It’s known that under regular circumstances laboratory rats eat an average of μ=10 grams of food each day, with standard deviation σ=2. The researcher selects a random sample of n=16 rats and places them in a controlled atmosphere room where the relative humidity is maintained at 90%. For these rats in humid atmosphere, the average daily food consumption is 13 grams. The researcher tests at 5% significance level to examine whether humidity affects eating behavior, please estimate the power of the test. (For hypothesis testing questions, include standard four steps (hypothesis, criteria, calculation, conclusion)
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A researcher would like to determine whether humidity can have
an effect on eating behavior. It’s...
A researcher would like to determine whether an over-the-counter cold medication has an effect on mental...
A researcher would like to determine whether an over-the-counter cold medication has an effect on mental alertness. A sample of n = 25 participants is obtained, and each person is given a standard dose of the medication one hour before being tested in a driving simulation task. For the general population, scores on the simulation task are normally distributed with μ = 58 and σ = 20. The individuals in the sample had an average score of M = 56....
A researcher would like to determine whether an over-the-counter cold medication has an effect on mental...
A researcher would like to determine whether an over-the-counter cold medication has an effect on mental alertness. A sample of n= 18 participants is obtained, and each person is given a standard dose of the medication one hour before being tested in a driving simulation task. For the general population, scores on the simulation task are normally distributed with μ = 60. The individuals in the sample had an average score of M = 54 and an s = 8....
A researcher would like to determine whether an over-the-counter herbal nasal spray has an effect on...
A researcher would like to determine whether an over-the-counter herbal nasal spray has an effect on mental alertness for infants. A sample of n = 16 infants is obtained, and each baby is given a standard dose of the spray one hour before being tested for mental alertness. For the general population of infants, scores on a mental alertness screening test are normally distributed with μ = 60. The infants in the sample had an average score of M =...
l 37) A researcher would like to determine whether a new tax on cigarettes has had...
l
37) A researcher would like to determine whether a new tax on cigarettes has had any effect on people's behavior. During the year before the tax was imposed, stores located in rest areas on the state thruway reported selling an average of u = 410 packs per day with s = 60. The distribution of daily sales was approximately normal. For a sample of n = 9 days following the new tax, the researcher found an average of M...
please tell me if its a z test ke t test and why it is :)...
please tell me if its a z test ke t test and why it is :)
thanks!
CHECK ANSWERS! You should use a Z test because of the large sample size 30 < and we know the mean and the standard deviation. 6. The Graded Naming Test (GNT) requires respondents to name objects in a set of 30 black-and-white drawings. The test is often used to detect brain damage in the UK. The test begins with easy words like kangaroo,...
l
37) A researcher would like to determine whether a new tax on cigarettes has had any effect on people's behavior. During the year before the tax was imposed, stores located in rest areas on the state thruway reported selling an average of u = 410 packs per day with s = 60. The distribution of daily sales was approximately normal. For a sample of n = 9 days following the new tax, the researcher found an average of M...
please tell me if its a z test ke t test and why it is :)
thanks!
CHECK ANSWERS! You should use a Z test because of the large sample size 30 < and we know the mean and the standard deviation. 6. The Graded Naming Test (GNT) requires respondents to name objects in a set of 30 black-and-white drawings. The test is often used to detect brain damage in the UK. The test begins with easy words like kangaroo,...
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