Standardized Measures Seem To Indicate That The Average Level Of Anxiety Has Increased Gradually Over The Past 50 Years. (Twenge, 2000). In The 1950s , The Average Score On The Child Manifest Anxiety Scale Was μ= 15.1. A Sample Of N = 16 Of Today's Children Produces A Mean Score Of M = 23.3 With SS = 240. Based On The Sample, Has There Been A Significant Increase In The Average Level Of Anxiety Since The 1950s? Use A One-tail Test With α= .05. N = Df = M = μ = SS = S2 = SM B. State The Hypotheses And Select Alpha C. Locate Critical Region For Stated Alpha D. Compute Test Statistic (t-score) Sample Variance S²: Estimated Standard Error Sₘ: Computed T Statistic: E. Make A Decision About The Null Hypothesis And State A Conclusion.

Standardized measures seem to indicate that the average level of anxiety has increased gradually over the past 50 years. (Twenge, 2000). In the 1950s , the average score on the Child Manifest Anxiety Scale was μ= 15.1. A sample of n = 16 of today’s children produces a mean score of M = 23.3 with SS = 240. Based on the sample, has there been a significant increase in the average level of anxiety since the 1950s? Use a one-tail test with α= .05. n = df = M = μ = SS = s2 = sM b. State the hypotheses and select alpha c. Locate critical region for stated alpha d. Compute test statistic (t-score) Sample variance s²: Estimated standard error sₘ: Computed t statistic: e. Make a decision about the null hypothesis and state a conclusion.

- August 24, 2022 - Edwin Tunner

Standardized measures seem to indicate that the average level of anxiety has increased gradually over the past 50 years. (Twenge, 2000). In the 1950s , the average score on the Child Manifest Anxiety Scale was μ= 15.1. A sample of n = 16 of today’s children produces a mean score of M = 23.3 with SS = 240. Based on the sample, has there been a significant increase in the average level of anxiety since the 1950s? Use a one-tail test with α= .05.

n =

df =

M =

μ =

SS =

s2 =

b. State the hypotheses and select alpha

c. Locate critical region for stated alpha

d. Compute test statistic (t-score)
Sample variance s²:
Estimated standard error sₘ:
Computed t statistic:

e. Make a decision about the null hypothesis and state a conclusion.

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