Answer: The standard error of the mean = 0.5
Step-by-step explanation:
Given : Sample size : n = 144
Standard deviation : 
The formula to find the standard error of the mean is given by :-

i.e. 
Hence, the standard error of the mean =0.5
Answer:
For main effects
Factor (Language translator) confirms that there is no significance difference between two levels of language translator of main effect at 5% level of significance.
Factor (Types of language) confirms that there is no significance difference between three levels of types of language at 5% level of significance.
also,
For interaction effect between language translator and types of language, there is no significant difference that the interaction between language translator and types of language at 5% level of significance.
Step-by-step explanation:
see attached.
Answer:
B
Step-by-step explanation:
When a polynomial is in standard form, it is arranged in the order of largest power first, followed by the next largest, and then so on. The only polynomial here that follows this rule is the second one, or choice B. Hope this helps!