Data collected by child development scientists produced this confidence interval for the average age (in weeks) at which babies begin to crawl:
t-Inter val for μ [95.00% Confidence:] 29.202<μ[age]<31.844
Data collected by child development scientists produced this confidence interval for the average age (in weeks) at which babies begin to crawl:
t-Inter val for μ [95.00% Confidence:] 29.202<μ[age]<31.844