****Show all work please, no exel!!!!
1. Calculate a t-test for independent samples on the
following...
****Show all work please, no exel!!!!
1. Calculate a t-test for independent samples on the
following data. What is the value of t obt?
group 1 : 45,50,55,60,65
group 2: 60,70,80,90,100
2. The 95% confidence interval of the mean for mean =
13, s = 1.6 and N = 21 is:
3.
Chi-squared :
X
Y Row Marginals
A: 60, 30, 90
B: 18, 40, 58
Column Marginal: 78, 70, 140
HW 6: z-test, t-test for independent samples, t-test for related
samples, 1-way ANOVA
Researchers wanted to...
HW 6: z-test, t-test for independent samples, t-test for related
samples, 1-way ANOVA
Researchers wanted to explore different treatment methods to
effect memory skills in high school freshmen. Subjects were given a
memory test (under multiple conditions) these were the results:
Group 1
10, 8, 9, 11,
8, 9, 7, 6,
9, 8
Group 2
12, 10,
11, 9, 13, 8, 9, 12, 11, 11
Group 3
10, 9, 10, 9, 11,
8, 7, 9, 10, 11...
An experiment consists of three groups (Treatment Group 1,
Treatment Group 2, Placebo Group). What test...
An experiment consists of three groups (Treatment Group 1,
Treatment Group 2, Placebo Group). What test was MOST likely
used?
Repeated Measures T-test
Z-test
Single Sample T-test
ANOVA
The population mean difference for a T-test of Independent
Samples is ALWAYS
0
1
equal to the population mean minus the sample mean
can't answer/not enough information
A research study reported a LARGE effect size of .8. What effect
size formula was used?
Scheffe
Cohen's D
Tukey
Correlation
.10
.001
.05
.5
PLEASE SHOW WORK
4. Calculate the [H+], pH and percent dissociation of a solution
that is...
PLEASE SHOW WORK
4. Calculate the [H+], pH and percent dissociation of a solution
that is 0.50 M in HOCl and 0.60 M in NaOCl.
5. Calculate the [H+], pH and percent dissociation of a solution
that is 1.0 M in aniline (C6H5NH2) and 1.2 M in C6H5NH3Cl.
6. A solution contains 0.60 mol of NH4Cl and 0.30 mol of NH3 in
1.5 L. What is the pH if 0.070 mol of HCl is added to this
buffer?