(No. 1) Given: μ = 48, s = 17, n=25 and x = 65 STATISTICAL TOOL: T-TEST: ONE SAMPLE MEAN Formula: Solution: (No. 2) Given: x₁=7; x₂=5₁S₁² = 2; S₂² = 4; n₁ = 10; n₂ = 10 STATISTICAL TOOL: T-TEST: TWO SAMPLE MEANS Formula:
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- Krista wants to compare males and females on number of hours of physical activity done per week. If this is measured as a ratio variable, what test should Krista use to determine if males and females differ on number of hours of physical activity done per week? O chi-square test of independence O ANOVA O paired-samples t test O Independent samples t testA sample of 3 measurements are taken and recorded: x=7, y=10 and z=8 The sample mean is: x¯=x+y+z3=8.33 Fill in the table below. ai (ai−x¯)2 x y z s2=(x−x¯)2+(y−x¯)2+(z−x¯)22= s=(x−x¯)2+(y−x¯)2+(z−x¯)22=A company in the FMCG category wanted to test whether different package sizes of their floor cleaning liquid have an impact on sales. The different package sizes were 500ml, 1L, 2L, and 2.5 L. The company conducted Research in Mumbai and the results of the research are presented in the following table. `Source of variation Sum of squares Degrees of freedom Mean squares F-Ratio P-value Between groups ? ? ? 5.321 0.005 Within groups ? ? 1.387 Total 60.976 31 a). Identify the type of design. b) Fill in the spaces in the blank. c) Find out the number of observations. d) State the null and alternate hypotheses. e) What conclusion can be drawn from the table.
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- What is the value of SP for the following set of data? Y 3. 4c) Given the following ANOVA table: S.V d.f SS MS F-ratio Between Within Total ___ 32 36 191.450 104.720 ________ 47.863 _______ _______ i. Complete the ANOVA table. ii. Do the data provide sufficient evidence to indicate a difference among the treatment means? Test using 1% level of significance.Which MS Excel Tool shall be used with this problem? Dr. Hess has done work that suggests that emotional arousal affects pupil size. To ascertain if the type of arousal makes a difference, you decided to measure pupil size under three different arousal conditions (Neutral, Pleasant, Aversive). Each participant will look at all the different pictures that differ according to the condition. The pupil size after viewing each photograph is measured in millimeters. * ANOVA Single Factor ANOVA Two Factor Without Replication ANOVA Two Factor With Replication A researcher wants to examine driving performance under three telephone conditions namely: a) No Phone, b) Hand-Held, and c) Hands- Free. If he wants to measure the differences between sample means, we will calculate the variance: * both A and B between treatments within-treatments None of the above