Repeating readings helps to
Salam Academy Original Practice · Proposed mark scheme
Practise
Question bank
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12 questions
To compare the means of two groups, use
Salam Academy Original Practice · Proposed mark scheme
To test whether observed genetic ratios fit expected ratios, use
Salam Academy Original Practice · Proposed mark scheme
How many degrees of freedom for a t-test with two groups of 10?
Salam Academy Original Practice · Proposed mark scheme
If the calculated t value is greater than the critical value at p = 0.05,
Salam Academy Original Practice · Proposed mark scheme
A control using boiled enzyme shows
Salam Academy Original Practice · Proposed mark scheme
A standardised variable is one that
Salam Academy Original Practice · Proposed mark scheme
A sample has standard deviation 4.0 and n = 16. Calculate the standard error.
Salam Academy Original Practice · Proposed mark scheme
Results are valid if
Salam Academy Original Practice · Proposed mark scheme
A specific improvement to control temperature is
Salam Academy Original Practice · Proposed mark scheme
A null hypothesis for a correlation test states that
Salam Academy Original Practice · Proposed mark scheme
Means 12.0 and 10.0; variances 4.0 and 5.0; n = 10 in each group. Calculate t.
Salam Academy Original Practice · Proposed mark scheme