The IQ levels of a group of 10 females and a group of 12 males between 18 years old and 34 years old were tested, showing the following results: Female IQ Male IQ 96 10a 8a 96 8a 93 8a 88 101 94 103 85 103 97 96 11a 127 11a 126 12a 94 10a Using a significance level 0.05, perform the 8-step hypothesis test to test the claim that the men IQ level is significantly greater than that of women, using a significance level of 0.05 (a=1)
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The IQ levels of a group of 10 females and a group of 12 males between 18 years old and 34 years old were tested, showing the following results:
Female IQ |
Male IQ |
96 |
10a |
8a |
96 |
8a |
93 |
8a |
88 |
101 |
94 |
103 |
85 |
103 |
97 |
96 |
11a |
127 |
11a |
126 |
12a |
|
94 |
|
10a |
Using a significance level 0.05, perform the 8-step hypothesis test to test the claim that the men IQ level is significantly greater than that of women, using a significance level of 0.05 (a=1)
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- What is meant by the sample space of an experiment?A researcher was interested in the effect of home schooling on literacy. Thirteen children who were home-schooled and 13 children who attended a public school participated in a study. The children were matched on age, family SES, and IQ as tested with the WISC (Weschler Inteeligence Scale for Children). The researchers were interested in the number of books the children read each year and so they asked them to recall the titles of the books read in the last 12 months. The researchers hypothesized that children who are home-schooled read more than children who attend public school. Interpret the Excel output obtained at the 5% significance level (a = 0.05). What conclusion can the researchers draw? Write the step 5 answer (formal APA format notation and conclusion; round your answer to 2 decimal places). Home School Public School MET t-Test: Paired Two Sample for Means 4 12 6. Home School Public School 1 Mean 10.69 7.23 3 3 Variance 27.90 20.69 20 18 Observations 13 18 10 Pearson…An experiment was conducted to examine the performance (as measured by the number of errors made) on a motor skills task. Twenty-four subjects (12 young and 12 old) were assigned to either an easy or hard motor skills task. There were two factors in the study: age (young/old) and difficulty of the motor skills task (easy/hard). The number of errors made on the motor skills task was recorded for each person and is presented in the table below. Null and Alternative Hypotheses: H0: There is not an interaction between young and old H0: µYoung = µOld H1: There is an interaction between young and old H1: µYoung ≠ µOld H0: There is not an interaction between easy and hard H0: µEasy = µHard H1: There is an interaction between young and old H1: µEasy ≠ µHard H0: There is not an interaction between age and difficulty H0: µAge = µDifficulty H1: There is an interaction between age and difficulty. H1: µAge ≠ µDifficulty I need the partial η2 scores for this, they are all bellow F(1, 20) =…
- An experiment was conducted to examine the performance (as measured by the number of errors made) on a motor skills task. Twenty-four subjects (12 young and 12 old) were assigned to either an easy or hard motor skills task. There were two factors in the study: age (young/old) and difficulty of the motor skills task (easy/hard). The number of errors made on the motor skills task was recorded for each person and is presented in the table below. Null and Alternative Hypotheses: H0: There is not an interaction between young and old H0: µYoung = µOld H1: There is an interaction between young and old H1: µYoung ≠ µOld H0: There is not an interaction between easy and hard H0: µEasy = µHard H1: There is an interaction between young and old H1: µEasy ≠ µHard H0: There is not an interaction between age and difficulty H0: µAge = µDifficulty H1: There is an interaction between age and difficulty. H1: µAge ≠ µDifficulty I need this table filled out and the results written in APA format.The data from car crash tests for four different vehicle size categories (Small, Midsize, Large, and SUV) with measured amounts of left leg femur force (kN) results in the following Minitab display. Using a 0.05 significance level, test the claim that the four vehicle size categories have the same mean force on the femur of the left leg. Does size of the car appear to have an effect on the force on the left femur in crash tests? Analysis of Variance Source DF Adj SS Adj MS F-Value 0.45 P-Value 0.718 Size 3 0.5373 0.1791 Error 52 20.6908 0.3979 Total 55 21.2281 ... Determine the null hypothesis. Ho: Determine the alternative hypothesis. H₁: Determine the test statistic. The test statistic is (Round to two decimal places as needed.) Determine the P-value. The P-value is (Round to three decimal places as needed.) Does size of the car appear to have an effect on the force on the left femur in crash tests? Ho. There sufficient evidence at a 0.05 significance level to warrant rejection of…The data from car crash tests for four different vehicle size categories (Small, Midsize, Large, and SUV) with measured amounts of left leg femur force (kN) results in the following Minitab display. Using a 0.05 significance level, test the claim that the four vehicle size categories have the same mean force on the femur of the left leg. Does size of the car appear to have an effect on the force on the left femur in crash tests? olve this F1 2 Analysis of Variance Source DF Size Error Total W S Determine the null hypothesis. X 3 52 H command 55 View an example Get more help Adj SS 0.7281 20.0304 20.7585 Ho: #1=H₂=H3 = µ4 Determine the alternative hypothesis. H₁: At least one of the means is different from the others Determine the test statistic. #3 The test statistic is (Round to two decimal places as needed.) 20 F3 E D C Adj MS 0.2427 0.3852 54 $ R F F4 % 5 F-Value 0.63 V T P-Value 0.599 G 6 B MacBook Air @ F6 Y H & 7 N F7 * 8 M | ( 9 K F9 ) ABBA H O L F10 command Clear all P F11 alt…
- A simple random sample of size n = 200 drivers with a valid driver's license is asked if they drive an American-made automobile. Of the 200 drivers surveyed, 118 responded that they drive an American-made automobile. Determine if a majority of those with a valid driver's license drive an American-made automobile at the a = 0.05 level of significance. ..... What type of variable is "drive an American-made automobile, or not"? A. Qualitative with two possible outcomes B. Discrete C. Continuous…A simple random sample of size n = 200 drivers with a valid driver's license is asked if they drive an American-made automobile. Of the 200 drivers surveyed, 118 responded that they drive an American-made automobile. Determine if a majority of those with a valid driver's license drive an American-made automobile at the a = 0.05 level of significance. ..... What type of variable is "drive an American-made automobile, or not"? A. Qualitative with two possible outcomes B. Discrete C. Continuous…A simple random sample of size n = 200 drivers with a valid driver's license is asked if they drive an American-made automobile. Of the 200 drivers surveyed, 122 responded that they drive an American-made automobile. Determine if a majority of those with a valid driver's license drive an American-made automobile at the a = 0.05 level of significance. ..... What type of variable is "drive an American-made automobile, or not"? A. Qualitative with two possible outcomes B. Discrete C. Continuous D. Qualitative with more than two possible outcomes What type of hypothesis test is appropriate to conduct for this research? A. Hypothesis test on a population standard deviation CB. Hypothesis test on a population proportion CC. Hypothesis test on a population mean Determine the null and alternative hypotheses. Ho: H1: (Type integers or decimals. Do not round.)
- A simple random sample of size n = 200 drivers with a valid driver's license is asked if they drive an American-made automobile. Of the 200 drivers surveyed, 122 responded that they drive an American-made automobile. Determine if a majority of those with a valid driver's license drive an American-made automobile at the a = 0.05 level of significance. ..... What type of variable is "drive an American-made automobile, or not"? A. Qualitative with two possible outcomes B. Discrete C. Continuous D. Qualitative with more than two possible outcomes What type of hypothesis test is appropriate to conduct for this research? A. Hypothesis test on a population standard deviation B. Hypothesis test on a population proportion C. Hypothesis test on a population mean Determine the null and alternative hypotheses. Ho: p 0.5 = H1: p (Type integers or decimals. Do not round.) > 0.5 Which distribution should be used for this hypothesis test? A. The chi-square distribution because the parameter is o or…Based on a recent study about language development, it is recommended children learn a second language when they are 10 years old. A linguist believes the average age children learn a second language is less than the age stated in the study. To test this claim, at the 2.5% significance level, the linguist collects the following data on a sample of 21 children learning a second language and records the age of when they started learning the second language. The following is the data from this study: Sample size =21 childrenSample mean =9.2 years oldSample standard deviation =2.5 years old Identify the null and alternative hypothesis for this study by filling in the blanks with the correct symbol (=,≠,<, or > to represent the correct hypothesis.) Provide your answer below: null hypothesis : $\mu$μ 10 alternative hypothesis : $\mu$μ 10A forensic psychologist is interested in assessing the prevalence of major depressive disorders among a sample of prison inmates. A random sample of inmates was selected and tested on the MDI (Major Depressive Inventory), a self-report instrument designed to measure levels of depression. Their scores were: 8, 10, 4, 11, 7, 10, 13, 4, 8, 7, 9, 3, 15, 10, 10, 10, & 13. a.) Use descriptive statistics including sample size, skewness, kurtosis, mean, median, mode, range, and standard deviation to describe this sample. Write your results in a paragraph similar to the Results section of a manuscript. b.) If the MDI has a µ = 10, is the depression of prison inmates significantly different than that of the general population? Test with an α = 0.05. c.) What type of error is possible based on the outcome? I need help learning these questions.