Statistics
posted by Anonymous .
Body masses were measured for five female and five male adult Anolis lizards. Test the hypothesis of no difference in mean body mass of females and males versus the alternative that a difference exists. Use a 5% level of significance. Body Mass (g):
Females 55,49,60,51,56 and for Males the weights are: 54,50,45,47,51

Try an independent groups ttest. This will be a twotailed test because the problem is asking if there is a difference, which could be in either direction.
Hypotheses:
Ho: µ1 = µ2 (1 = females; 2 = males)
Ha: µ1 ≠ µ2
Compare the test statistic you calculate with .05 level of significance for a twotailed test using a ttable.
Degrees of freedom = n1 + n2  2
I'll let you take it from here.
Respond to this Question
Similar Questions

statistics
Cholesterol levels of adult males are approximately normally distributed with a mean of mg/dL and a listed standard deviation of . Some researchers claim that the standard deviation of cholesterol levels of adult males is less than … 
Biology
This is to do with genetics and drosophila. There are 3 pairs of characteristics  body colour, eye colour and wing length. The parents are all from purebreeding lines. First Cross P1: malegrey body, normal wings femaleblack body, … 
biology
This is to do with genetics and drosophila. There are 3 pairs of characteristics  body colour, eye colour and wing length. The parents are all from purebreeding lines. First Cross P1: malegrey body, normal wings femaleblack body, … 
statistics
Each person in random sample of 247 male and 253 female working adults living in Calgary, Canada was asked how long, in minutes, his or her typical daily commute was. use the accompanying summary statistics and an appropriate hypothesis … 
Statistics
Cholesterol levels of adult males are approximately normally distributed with a mean of mg/dL and a listed variance of . Some researchers claim that the variance of cholesterol levels of adult males is less than . Suppose that we want … 
Statistics
The Computer Anxiety Rating Scale (CARS) measures an individual's level of computer anxiety, on a scale from 20 ( no anxiety) to 100 (highest level of anxiety). Researchers at Miami University administered CARS to 172 business students. … 
statistics
A survey was conducted to determine the proportion of male and female respondents who are in favor of a sales training program of a bottling company. 120 out of 400 males and 130 out of 500 females are in favor of the issue. Is there … 
STAT
Numerous studies have found that males report higher selfesteem than females, especially for adolescents (Kling, Hyde, Showers, & Buswell, 1999). Typical results show a mean selfesteem score of M 39.0 with SS 60.2 for a sample … 
Statistics
A Youth Correction Center completed a study to explore the proportion of delinquent behaviour, according to birth order, among two groups of teenagers (males and females, age 1217). The data are given in the table below. Determine … 
stats
18. Numerous studies have found that males report higher selfesteem than females, especially for adolescents (Kling, Hyde, Showers, & Buswell, 1999). Typical results show a mean selfesteem score of M = 39.0 with SS = 60.2 for a sample …