A study conducted to measure the academic performance and attention span of teenagers reported that the mean time to distraction for 80 teen

Question

A study conducted to measure the academic performance and attention span of teenagers reported that the mean time to distraction for 80 teenage boys working on an independent task was 6.2 min in the study with a sample standard deviation of 2.1 minutes. Is there convincing evidence that the average attention span for teenage boys is more than 5 minutes

in progress 0
Neala 4 years 2021-07-23T17:29:16+00:00 1 Answers 6 views 0

Answers ( )

  1. kimcuc
    0
    2021-07-23T17:30:22+00:00
    Reply

    Answer:

    we can conclude that there is significant evidence that there is convincing evidence that the average attention span for teenage boys is more than 5 minutes

    Step-by-step explanation:

    H0 : μ ≤ 5

    H1 : μ > 5

    Sample mean, xbar = 6.2

    Sample Standard deviation, s = 2.1

    Sample size, n = 80

    The test statistic :

    (xbar – μ) ÷ (s/sqrt(n))

    (6.2 – 5) ÷ (2.1 / sqrt(80))

    1.2 ÷ 0.2347871

    Test statistic = 5.1110133

    Testing with α = 0.05

    Using Pvalue from a test score calculator :

    Pvalue = < 0.00001

    0.00001 < 0.05

    Since,

    Pvalue < α ; We reject H0

    Hence, we can conclude that there is significant evidence that there is convincing evidence that the average attention span for teenage boys is more than 5 minutes.

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )