Patient satisfaction. Scores derived from a patient satisfaction survey are Normally distributed with μ = 50 and σ = 7.5, with high scores indicating high satisfaction. An SRS of n = 36 is taken from this population. a) We seek evidence against the hypothesis that a particular group of patients comes from a population in which μ = 50. Sketch the curve that describes the sampling distribution of x¯x¯ under the null hypothesis. What are the horizontal axis with values that are -2, -1, 0, +1, +2 times standard errors above and below the mean? b) Previous questions considered an SRS of n = 36 in which x¯x¯ was 48.8. A different sample derives x¯x¯= 46.5. Mark this result on the horizontal axis of your sketch of the sampling distribution of x¯x¯ . What is zstat?
Patient satisfaction. Scores derived from a patient satisfaction survey are
a) We seek evidence against the hypothesis that a particular group of patients comes from a population in which μ = 50. Sketch the curve that describes the sampling distribution of x¯x¯ under the null hypothesis. What are the horizontal axis with values that are -2, -1, 0, +1, +2 times standard errors above and below the
b) Previous questions considered an SRS of n = 36 in which x¯x¯ was 48.8. A different sample derives x¯x¯= 46.5. Mark this result on the horizontal axis of your sketch of the sampling distribution of x¯x¯ . What is zstat?
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