Respuesta :
Answer:
There is enough evidence to conclude that the number of minutes spent online per day is related to gender
Step-by-step explanation:
Given that a researcher wants to determine whether the number of minutes adults spend online per day is related to gender. A random sample of 315 adults was selected and the results are shown below.
Gender 0-30 30-60 60-90 90+ total
Males 75 45 25 35 180
Females 30 45 45 15 135
H0: there is no association between gender and spending time online
Ha: There is association
(Two tailed test)
Expected for each cell is calculated as row total*grand total/column total
<30 30-60 60-90 >90 Row Totals
Males 75 (60.00) [3.75] 45 (51.43) [0.80] 25 (40.00) [5.62] 35 (28.57) [1.45] 180
Females 30 (45.00) [5.00] 45 (38.57) [1.07] 45 (30.00) [7.50] 15 (21.43) [1.93] 135
chi square -= 27.125
p value <0.0001
Since p is less than 1% (significance level) we reject the null hypothesis
There is enough evidence to conclude that the number of minutes spent online per day is related to gender
Answer:
The answer would be 18.146
Step-by-step explanation:
Given that a researcher wants to determine whether the number of minutes adults spend online per day is related to gender. A random sample of 315 adults was selected and the results are shown below.Gender 0-30 30-60 60-90 90+ totalMales 75 45 25 35 180Females 30 45 45 15 135H0: there is no association between gender and spending time onlineHa: There is association(Two tailed test)Expected for each cell is calculated as row total*grand total/column total<30 30-60 60-90 >90 Row TotalsMales 75 (60.00) [3.75] 45 (51.43) [0.80] 25 (40.00) [5.62] 35 (28.57) [1.45] 180Females 30 (45.00) [5.00] 45 (38.57) [1.07] 45 (30.00) [7.50] 15 (21.43) [1.93] 135chi square -= 27.125p value <0.0001Since p is less than 1% (significance level) we reject the null hypothesisThere is enough evidence to conclude that the number of minutes spent online per day is related to gender
